Nihon kohden cardiofax gem ecg 9020k инструкция - Инструкции, руководства, мануалы

Conventions Used in this Manual and Instrument

Section 1 General

Section 2 Maintenance

Warnings, Cautions and Notes

Explanations of the Symbols in this Manual and Instrument

Introduction

Service Policy

Specifications

Panel Description

Composition

Location

Block Diagram

Connection Diagram

Replacement

Cleaning and Greasing

Troubleshooting Flowchart

Troubleshooting Table

ECG-9020K Electrocardiograph

ECG-9020P Electrocardiograph

ECG-9022K Electrocardiograph

Cleaning the Motor Rotation Sensor and Greasing the Motor Gear and Gear Meshed with Motor Gear

Operation Panel

Right Side Panel

Operation Panel

Right Side Panel

Top View

Operation Panel

Right Side Panel

		CONTENTS
	Contents
	Conventions Used in this Manual and Instrument …………………………………………………………..	i
	Warnings, Cautions and Notes ……………………………………………………………………………	i
	Explanations of the Symbols in this Manual and Instrument ……………………………………	i
Section 1	General ……………………………………………………………………….	1C.1
	Introduction …………………………………………………………………………………………………………..	1.1
	Service Policy ……………………………………………………………………………………………………….	1.2
	Specifications ……………………………………………………………………………………………………….	1.3
	Panel Description …………………………………………………………………………………………………..	1.5
	ECG-9010K Electrocardiograph ……………………………………………………………………….	1.5
	Top View ……………………………………………………………………………………………..	1.5
	Operation Panel……………………………………………………………………………………	1.6
	Right Side Panel ………………………………………………………………………………….	1.7
	ECG-9020K/P Electrocardiograph ……………………………………………………………………	1.8
	Top View ……………………………………………………………………………………………..	1.8
	Operation Panel……………………………………………………………………………………	1.9
	Right Side Panel ………………………………………………………………………………..	1.10
	ECG-9022K Electrocardiograph ……………………………………………………………………..	1.11
	Top View ……………………………………………………………………………………………	1.11
	Operation Panel………………………………………………………………………………….	1.12
	Right Side Panel ………………………………………………………………………………..	1.13
	Composition ………………………………………………………………………………………………………..	1.14
	ECG-9010K Electrocardiograph ……………………………………………………………………..	1.14
	ECG-9020K Electrocardiograph ……………………………………………………………………..	1.15
	ECG-9020P Electrocardiograph ……………………………………………………………………..	1.16
	ECG-9022K Electrocardiograph ……………………………………………………………………..	1.17
	Location ………………………………………………………………………………………………………………	1.18
	Block Diagram ……………………………………………………………………………………………………..	1.19
	Connection Diagram ……………………………………………………………………………………………..	1.20
Section 2	Maintenance ……………………………………………………………….	2C.1
	Replacement …………………………………………………………………………………………………………	2.1
	Periodic Replacement Schedule ………………………………………………………………………	2.1
	Cleaning ……………………………………………………………………………………………………………….	2.2
	Cleaning and Greasing Schedules……………………………………………………………………	2.2
	Cleaning the Paper Mark Sensor and Paper Empty Sensor ………………………………….	2.2
	Cleaning the Motor Rotation Sensor and
	Greasing the Motor Gear and Gear Meshed with Motor Gear ……………………………….	2.3
Section 3 Troubleshooting and System Error Message ………………	3C.1
	Troubleshooting Flowchart ……………………………………………………………………………………….	3.1
	Troubleshooting Table ……………………………………………………………………………………………..	3.4

Service Manual ECG-9010/9020 Rev B

C.1

CONTENTS
Troubleshooting General Operation Problem………………………………………………………	3.4
Troubleshooting Recording Problem …………………………………………………………………	3.6
System Error Message ……………………………………………………………………………………………	3.7

Section 4	System Test, Adjustment and Setting…………………………..	4C.1
	System Test ………………………………………………………………………………………………………….	4.1
	Overall …………………………………………………………………………………………………………	4.1
	Calling up the Test Level 1 ……………………………………………………………………………..	4.2
	Calling up the Test Level 2 ……………………………………………………………………………..	4.3
	Entering the System Test Number ……………………………………………………………………	4.4
	Executing the System Test …………………………………………………………………………….	4.5
	Quitting the System Test ………………………………………………………………………………..	4.6
	Exiting the System Test Mode ………………………………………………………………………..	4.6
	Demonstration ……………………………………………………………………………………………………….	4.7
	Recorder ……………………………………………………………………………………………………………….	4.8
	Thermal Head ………………………………………………………………………………………………………	4.11
	Key …………………………………………………………………………………………………………………….	4.12
	Memory ………………………………………………………………………………………………………………	4.13
	Single Memory Test Mode …………………………………………………………………………….	4.14
	Continuous Memory Test Mode ……………………………………………………………………..	4.14
	LCD/LED …………………………………………………………………………………………………………….	4.15
	Input Unit ……………………………………………………………………………………………………………	4.17
	Calibration …………………………………………………………………………………………………………..	4.18
	Communication ……………………………………………………………………………………………………	4.19
	CRO/EXT1 ………………………………………………………………………………………………………….	4.21
	System Setup Initialization ……………………………………………………………………………………	4.23
	ECG Findings List Recording …………………………………………………………………………………	4.24
	Recording Resolution Setting …………………………………………………………………………………	4.25
	Cue Mark Adjustment ……………………………………………………………………………………………	4.26
	Date and Time Setting …………………………………………………………………………………………..	4.28
	Setting the Date and Time …………………………………………………………………..	4.28

Section 5	Board/Unit Description ………………………………………………….	5C.1
	Block Diagram ………………………………………………………………………………………………………	5.1
	Power Unit……………………………………………………………………………………………………………	5.2
	ECG Control Board ……………………………………………………………………………………………….	5.2
	Flash ROM Board …………………………………………………………………………………………………	5.3
	Inverter Board ………………………………………………………………………………………………………	5.3

Section 6 Disassembly and Assembly …………………………………………..	6C.1
Before You Begin …………………………………………………………………………………………………..	6.1
Warnings and Cautions ………………………………………………………………………………..	6.1
Required Tools …………………………………………………………………………………………….	6.1
Board and Unit Location ……………………………………………………………………………….	6.2
Cable Connection ………………………………………………………………………………………..	6.3
Removing the Top Casing ………………………………………………………………………………………..	6.4

C.2	Service Manual ECG-9010/9020 Rev B

		CONTENTS
	Removing the LCD Assy …………………………………………………………………………………………	6.5
	Removing the Thermal Head Assy ……………………………………………………………………………	6.6
	Removing the Motor Assy ……………………………………………………………………………………….	6.8
	Removing the Speaker Assy ……………………………………………………………………………………	6.9
	Removing the Inverter Board …………………………………………………………………………………	6.10
	Removing the ECG Control Board …………………………………………………………………………..	6.11
	Removing the Power Unit ………………………………………………………………………………………	6.12
	Replacing the Thermistor and Termistor Cable ………………………………………………….	6.14
	Removing the Battery Terminal Assy ……………………………………………………………………….	6.15
	Removing the Magazine Assy ………………………………………………………………………………..	6.16
	Removing the Bottom Casing …………………………………………………………………………………	6.17
	Replacing the Fuse on the Power Board …………………………………………………………………..	6.18
	Replacing the Lithium Battery on the ECG Control Board ……………………………………………	6.19
Section 7	Replaceable Parts List…………………………………………………	7C.1
	General Parts List ………………………………………………………………………………………………….	7.2
	Top Casing Assy ……………………………………………………………………………………………………	7.4
	Top Casing Assy, RK-0007 for ECG-9010K ……………………………………………………….	7.4
	Top Casing Assy, RK-0009 for ECG-9020K ……………………………………………………….	7.5
	Top Casing Assy, RK-0044 for ECG-9020P ……………………………………………………….	7.6
	Top Casing Assy, RK-0058 for ECG-9022K ……………………………………………………….	7.7
	Thermal Head Assy, YZ-011H8 ………………………………………………………………………………..	7.8
	Motor Assy, GC-0011 ……………………………………………………………………………………………..	7.9
	Speaker Assy, RK-0005 ………………………………………………………………………………………..	7.10
	Magazine Assy, RH-0001 ………………………………………………………………………………………	7.11
	Battery Terminal Assy, RK-0006 ……………………………………………………………………………..	7.12
	LCD Assy, VL-0001 ………………………………………………………………………………………………	7.13
	Patient Cable Hanger …………………………………………………………………………………………….	7.14
Section 8	Connector Pin Assignment …………………………………………	8C.1
	Power Unit …………………………………………………………………………………………………………….	8.1
	CN11 (to AC Inlet) …………………………………………………………………………………………	8.1
	CN21 (to ECG control board) …………………………………………………………………………..	8.1
	CN31 (to Thermal Head) …………………………………………………………………………………	8.1
	CN51 (to Battery) ………………………………………………………………………………………….	8.1
	ECG Control Board …………………………………………………………………………………………………	8.2
	CNJ011 (to Thermal Head) ……………………………………………………………………………..	8.2
	CNJ012 (to Inverter Board) …………………………………………………………………………….	8.2
	CNJ013 (to LCD) …………………………………………………………………………………………..	8.3
	CNJ021 (to Flash ROM Board) ………………………………………………………………………..	8.3
	CNJ031 (to SIO Connector) ……………………………………………………………………………	8.5
	CNJ032 (to Key Connector) …………………………………………………………………………….	8.5
	CNJ033 (to Speaker) ……………………………………………………………………………………..	8.6
	CNJ035 (to Power Unit) ………………………………………………………………………………….	8.7
	CNJ036 (to Motor) …………………………………………………………………………………………	8.8
	CNJ041 (to CRO Connector) …………………………………………………………………………..	8.8
	CNJ043 (to EXT INPUT Connector) …………………………………………………………………	8.8

Service Manual ECG-9010/9020 Rev B

C.3

CONTENTS

CNJ091 (to ECG Connector) …………………………………………………………………………..	8.9
Flash ROM Board …………………………………………………………………………………………………	8.10
CNJ021 (to ECG Control Board) …………………………………………………………………….	8.10
Inverter Board ……………………………………………………………………………………………………..	8.12
CN1 (to ECG Control Borad) …………………………………………………………………………	8.12
CN2 (to LCD module) …………………………………………………………………………………..	8.12
External Input/Output Socket …………………………………………………………………………………	8.13
SIO Socket ………………………………………………………………………………………………..	8.13
EXT Input and CRO Output …………………………………………………………………………..	8.13

C.4	Service Manual ECG-9010/9020 Rev B

Warnings, cautions and notes are used in this manual to alert or signal the reader to specific information.

WARNING

A warning alerts the user to the possible injury or death associated with the use or misuse of the instrument.

CAUTION

A caution alerts the user to possible injury or problems with the instrument associated with its use or misuse such as instrument malfunction, instrument failure, damage to the instrument, or damage to other property.

NOTE

A note provides specific information, in the form of recommendations, prerequirements, alternative methods or supplemental information.

The following symbols found in this manual/instrument bear the respective descriptions as given.

Cardiograph

Attention, consult	Input terminal for analog		Type CF applied part

operator’s manual	signal


Equipotential terminal	Output terminal for analog		The CE mark is a protected
signal		conformity mark of
			European Community.
			The products herewith

			comply with the
Serial input/output terminal	Eject (magazine release		requirements of the
button)		Medical Device Directive
			93/42/EEC.

Service Manual ECG-9010/9020 Rev A

Operation panel (for ECG-9010K onlly)

Alternating current	Age	Filter
“On” only for a part of	REST/PERIODIC	Copy
equipment	recording
“Off” only for a part of	Paper speed	Calibration
equipment

Battery charging (lamp/on	Gain	START/STOP recording
screen)

Battery check (lamp/on	Paper feed	Automatic control
screen)

QRS sync lamp	Mark	Manual control

Operation panel (for ECG-9020K only)

Alternating current	Age	Filter

“On” only for a part of	Sex	Copy
equipment

“Off” only for a part of	Mode	Calibration
equipment

Battery charging (lamp/on	Rhythm	START/STOP recording
screen)

Battery check (lamp/on	Paper feed	Automatic control
screen)

	Mark	Manual control

ii	Service Manual ECG-9010/9020 Rev A

Display (for ECG-9020K only)

QRS sync lamp

Patient cable

Service Manual ECG-9010/9020 Rev A

iii

Introduction …………………………………………………………………………………………………………	1.1
Service Policy ……………………………………………………………………………………………………..	1.2
Specifications ………………………………………………………………………………………………………	1.3
Panel Description …………………………………………………………………………………………………	1.5
ECG-9010K Electrocardiograph ……………………………………………………………………	1.5
Top View …………………………………………………………………………………………..	1.5
Operation Panel …………………………………………………………………………………	1.6
Right Side Panel ………………………………………………………………………………..	1.7
ECG-9020K/P Electrocardiograph …………………………………………………………………	1.8
Top View …………………………………………………………………………………………..	1.8
Operation Panel …………………………………………………………………………………	1.9
Right Side Panel ………………………………………………………………………………	1.10
ECG-9022K Electrocardiograph ………………………………………………………………….	1.11
Top View …………………………………………………………………………………………	1.11
Operation Panel ……………………………………………………………………………….	1.12
Right Side Panel ………………………………………………………………………………	1.13
Composition ………………………………………………………………………………………………………	1.14
ECG-9010K Electrocardiograph ………………………………………………………………….	1.14
ECG-9020K Electrocardiograph ………………………………………………………………….	1.15
ECG-9020P Electrocardiograph ………………………………………………………………….	1.16
ECG-9022K Electrocardiograph ………………………………………………………………….	1.17
Location ……………………………………………………………………………………………………………	1.18
Block Diagram ……………………………………………………………………………………………………	1.19
Connection Diagram …………………………………………………………………………………………..	1.20

Service Manual ECG-9010/9020 Rev B

1C.1

1. GENERAL

This service manual provides useful information to qualified service personnel to understand, troubleshoot, service, maintain and repair the ECG-9010K, ECG9020K/P and ECG-9022K Electrocardiograph (referred to in this service manual as “the instrument”, “ECG-9010K” or “ECG-9020K” which includes ECG-9020P and ECG-9022K).

All replaceable parts or units of this instrument and its optional units are clearly listed with exploded illustration to help you locate the parts quickly.

The System test, Adjustment and Setting section in this service manual describes the maintenance that should be performed by qualified service personnel. The Maintenance section in the operator’s manual describes the maintenance that can be performed by the user.

The information in the operator’s manual is primarily for the user. However, it is important for service personnel to thoroughly read the operator’s manual and service manual before starting to troubleshoot, service, maintain or repair this instrument. This is because service personnel needs to understand the operation of the instrument in order to effectively use the information in the service manual.

Service Manual ECG-9010/9020 Rev B

1.1

1. GENERAL

Nihon Kohden Corporation’s basic policy for technical service is to replace faulty units, printed circuit boards or parts. We do not support component-level repair of boards and units outside the factory for the following reasons:

•A special facility is necessary to repair multi-layer boards because most of the components on the board are SMD (surface mount devices) and most of the circuits employ a gate array method.

•To fulfill safety certification requirements, a special facility is necessary to verify safety as medical equipment after the power unit is repaired.

NOTE

•When ordering parts or accessories from your nearest Nihon Kohden Corporation’s distributor, please quote the NK code number and part name which is listed in this service manual, and the name or model of the unit in which the required part is located. This will help us to promptly attend to your needs.

•Always use parts and accessories recommended or supplied by Nihon Kohden Corporation to assure maximum performance from your instrument.

1.2	Service Manual ECG-9010/9020 Rev B

1. GENERAL

ECG input
Input impedance	10 MΩ or more
Electrode offset tolerance	±500 mV or more
Input unit protection	Isolated and defibrillator protected
Standard sensitivity	10 mm /mV ±2%
Common mode rejection ratio	100 dB or more
Frequency response	0.05 to 150 Hz (– 3 dB or more)
Waveform data processor
Sample rate	500 samples/s (input unit: 8,000 samples/s)
AC line filter	50/60 Hz, OFF
High-cut filter	75, 100, 150 Hz
EMG filter	25/35 Hz
Time constant	3.2 s or more
Waveform status detection	Electrode detachment (polarization voltage),
	Noise (high frequency)
Sensitivity selection	5, 10 , 20 mm/mV

LCD (monochrome with CCFT backlight) (for ECG-9020K/P, ECG-9022K only)

Size	5.6 inch
Number of dots	320 × 240
ECG waveform	3 channel:Real time 12 ECG lead complexes
	6 channel: 2.5 s
	Rhythm lead: 10 s
Displayed data	Waveform, patient information, recording settings,
	operation mode, heart rate, QRS sync mark, error message,
	electrode detachment, noise
Recorder
Printing method	High resolution thermal printer head
Printing density	200 dpi (8 dots/mm)
Scanning line density	1 ms
Recording width	104 mm
Number of recording channels	2, 3, 4, 6
Paper speed	10, 12.5, 25, 50 mm/s
	(10 and 12.5 mm/s available for ECG-9020K only)
Printed data	Program type, version, date and time, paper speed, sensitivity,
	lead name, filter, hospital name, patient information,
	timing mark, event mark, electrode detachment, noise
Mechanical noise	48 dB or less at paper speed 25 mm/s
External input/output
External input	10 mm/0.5 V ±5%, input impedance 100 kΩ or more
Signal output	0.5 V/1 mV ±5%, output impedance 100 Ω or less
Serial I/O	Communication method:	RS-232C
	Baud rate:	2400, 4800, 9600, 19200, 38400,
		57600, 115200
Service Manual ECG-9010/9020 Rev B		1.3

1. GENERAL

Power requirement
Line voltage	100 to 127 VAC, 220 to 240 VAC ±10%
Line frequency	50 or 60 Hz
Power input	Up to 120 VA
Power consumption	49 W or less
Built-in battery	Voltage: 12 V
(LCT-1912ANK)	Current consumption: 6A or less
Environment
Operating temperature		10 to 40°C
Operating humidity		25 to 90% RH
Operating atmospheric pressure		70 to 106 kPa
Storage duration and temperature		2 weeks or less:	−20 to 65°C
(Depends on the battery)		Between 2 weeks and One year:	−15 to 40°C
		Over one year:	−15 to 25°C
Storage humidity		10 to 95% RH (non condensing)
Storage atmospheric pressure		70 to 106 kPa
Recording paper storage temperature	−20 to 50°C
Recording paper storage humidity		25 to 90% RH
Electromagnetic compatibility		Class B
Other		Indoor portable

Dimensions and weight

Dimensions	280 W × 52 H ×
Weight	ECG-9010K:
	ECG-9020K/P:
	ECG-9022K:

216 D mm (excluding protrusions) Approx. 1.9 kg (without battery) Approx. 2.1 kg (without battery) Approx. 2.1 kg (without battery)

Safety

Safety standard:

IEC 60601-1 (1988), IEC 60601-1 Amendment 1 (1991), IEC 60601-1 Amendment 2 (1995) IEC 60601-2-25 (1993), IEC 60601-2-25 Amendment 1 (1999)

Type of protection against electric shock:

AC power: Class I

Batty power: Internally powered equipment

Degree of protection against electric shock:

Defibrillator proof type CF applied part when patient cable BJ-901D, BJ-902D or BJ-903D is used

Degree of protection against harmful ingress of water:

Ordinary equipment

Degree of safety of application in the presence of a flammable anaesthetic mixture with air, oxygen or nitrous oxide:

	Not suitable for use in the presence of a flammable anaesthetic mixture with air, oxygen or
	nitrous oxide
	Mode of operation: Continuous
	Performance
	Performance standard: IEC 60601-2-51 (2003)
1.4	Service Manual ECG-9010/9020 Rev B

1. GENERAL

ECG-9010K

Electrocardiograph

Name

1.Operation panel

2.Magazine (recording paper container)

3.Magazine release button

Service Manual ECG-9010/9020 Rev B

1.5

1. GENERAL

14 13

15	16	17	8	9	10
	12
					11

Name

4.Battery charge lamp

5.Battery operation lamp

6.AC power lamp

7.POWER key/lamp

8.FEED/MARK key

9.FILTER key/lamp

10.COPY/CAL key/lamp

11.START/STOP key/lamp

12.AUTO/MANUAL key/lamp

13.REST/PERIODIC key/lamp

14.AGE key/lamp

15.SPEED key/lamp

16.GAIN key/lamp

17.LEAD keys/lamp

18.QRS sync lamp

1.6	Service Manual ECG-9010/9020 Rev B

1. GENERAL

For the mark, refer to the descriptions for the Right Side Panel in Section 1 “Panel Descriptions” of the ECG-9010K Operator’s Manual.

Name

19.Patient input connector

20.EXT-IN connector

21.CRO-OUT

22.SIO connector

23.AC power cord socket

24.Battery compartment

25.Equipotential ground terminal

Service Manual ECG-9010/9020 Rev B

1.7

1. GENERAL

ECG-9020K/P	Top View
Electrocardiograph
	3

Name

1.Operation panel

2.Magazine (recording paper container)

3.Magazine release button

4.LCD screen

The keyswithes on the ECG-9020P have a name label instead of the symbol.

1.8	Service Manual ECG-9010/9020 Rev B

1. GENERAL

9	10	11	12	13	14

Name

5.Battery charge lamp

6.Battery operation lamp

7.AC power lamp

8.POWER key/lamp

9.MODE key

10 RHYTHM key/lamp

11.FEED/MARK key

12.FILTER key/lamp

13.COPY/CAL key/lamp

14.START/STOP key/lamp

15.AUTO/MANUAL key/lamp

16.F1, F2, F3 function keys

17.AGE key

18.SEX key

Service Manual ECG-9010/9020 Rev B

1.9

1. GENERAL

For the mark, refer to the descriptions for the Right Side Panel in Section 1 “Panel Descriptions” of the ECG-9020K or ECG 9020P Operator’s Manual.

Name

19.Patient input connector

20.EXT-IN connector

21.CRO-OUT

22.SIO connector

23.AC power cord socket

24.Battery compartment

25.Equipotential ground terminal

1.10	Service Manual ECG-9010/9020 Rev B

ECG-9022K

Electrocardiograph

1. GENERAL

Name

1.Operation panel

2.Magazine (recording paper container)

3.Magazine release button

4.LCD screen

Service Manual ECG-9010/9020 Rev B

1.11

1. GENERAL

9	10	11	12	13	14

Name

5. Battery charge lamp

6. Battery operation lamp

7. AC power lamp

8. POWER key/lamp

9. MODE key

10 RHYTHM key/lamp

11. FEED/MARK key

12. FILTER key/lamp

13. COPY/CAL key/lamp

14. START/STOP key/lamp

15. AUTO/MANUAL key/lamp

16. F1, F2, F3 function keys

17. AGE key

18. SEX key

1.12	Service Manual ECG-9010/9020 Rev B

1. GENERAL

For the mark, refer to the descriptions for the Right Side Panel in Section 1 “Panel Descriptions” of the ECG-9022K Operator’s Manual.

Name

19.Patient input connector

20.EXT-IN connector

21.CRO-OUT

22.SIO connector

23.AC power cord socket

24.Battery compartment

25.Equipotential ground terminal

Service Manual ECG-9010/9020 Rev B

1.13

1. GENERAL

ECG-9010K Electrocardiograph

ECG-9010K	RK-0002	Bottom Casing Assy



	RK-0003	Internal Parts



			GC-0011	Motor Assy



			RH-0001	Magazine Assy



			RK-0004	Thermal Head Assy



			RK-0005	Speaker Assy



			RK-0006	Battom Terminal Assy



	RK-0007	ECG-9010K Top Casing Assy



	SC-903D	Power Unit


	UT-23561	ECG Control Board



	UT-2357	Flash ROM Board
(Optional)


	KD-104E	Cart


	KH-801E	Patinet Cable Hanger


	DI-106D	Fixing Plate for Cart


	YC-901D	Carrying Case

•To order a replacement assembly above, use the Code No.

•To order a replacement component inside an assembly, refer to “Section 7 Replaceablet Parts List”.

1.14	Service Manual ECG-9010/9020 Rev B

1. GENERAL

ECG-9020K	RK-0002	Bottom Casing Assy



	RK-0003	Internal Parts



			GC-0011	Motor Assy



			RH-0001	Magazine Assy



			RK-0004	Thermal Head Assy



			RK-0005	Speaker Assy



			RK-0006	Battom Terminal Assy



	RK-0009	ECG-9020K Top Casing Assy



	SC-903D	Power Unit


	UT-23561	ECG Control Board



	UT-2357	Flash ROM Board



	VL-0001	LCD Assy
(Optional)



	KD-104E	Cart


	KH-801E	Patinet Cable Hanger


	DI-106D	Fixing Plate for Cart


	YC-901D	Carrying Case

•To order a replacement assembly above, use the Code No.

•To order a replacement component inside an assembly, refer to “Section 7 Replaceablet Parts List”.

Service Manual ECG-9010/9020 Rev B

1.15

1. GENERAL

ECG-9020P	RK-0002	Bottom Casing Assy



	RK-0003	Internal Parts



			GC-0011	Motor Assy



			RH-0001	Magazine Assy



			RK-0004	Thermal Head Assy



			RK-0005	Speaker Assy



			RK-0006	Battom Terminal Assy



	RK-0044	ECG-9020P Top Casing Assy



	SC-903D	Power Unit


	UT-23563	ECG Control Board



	UT-23577	Flash ROM Board



	VL-0001	LCD Assy
(Optional)


	KD-104E	Cart


	KH-801E	Patinet Cable Hanger


	DI-106D	Fixing Plate for Cart


	YC-901D	Carrying Case

•To order a replacement assembly above, use the Code No.

•To order a replacement component inside an assembly, refer to “Section 7 Replaceablet Parts List”.

1.16	Service Manual ECG-9010/9020 Rev B

1. GENERAL

ECG-9022K	RK-0002	Bottom Casing Assy



	RK-0003	Internal Parts



			GC-0011	Motor Assy



			RH-0001	Magazine Assy



			RK-0004	Thermal Head Assy



			RK-0005	Speaker Assy



			RK-0006	Battom Terminal Assy



	RK-0058	ECG-9022K Top Casing Assy



	SC-903D	Power Unit


	UT-23564	ECG Control Board



	UT-2357D	Flash ROM Board



	VL-0001	LCD Assy
(Optional)



	KD-104E	Cart


	KH-801E	Patinet Cable Hanger


	DI-106D	Fixing Plate for Cart


	YC-901D	Carrying Case

•To order a replacement assembly above, use the Code No.

•To order a replacement component inside an assembly, refer to “Section 7 Replaceablet Parts List”.

Service Manual ECG-9010/9020 Rev B

1.17

1. GENERAL

	Thermal Head Assy	LCD Assy (for ECG-9020K/9020P/9022K only)

Motor Assy		Flash ROM Board

		Inverter Board
		(for ECG-9020K/9020P/9022K only)
Speaker Assy

ECG Control Board

Power Unit

1.18	Service Manual ECG-9010/9020 Rev B

1. GENERAL

NOTE

The LCD module and inverter board are used for the ECG-9020K,

ECG-9020P and ECG-9022K only.

Piezo-electric

CNA011

CNJ032 (2pin)

buzzer

Flash ROM Board

Motor, Motor sensor,

CNA012

CNJ036 (12pin)

Mark sensor

CNJ011 (80pin)

Membrane key

CNJ033 (40pin)

CNJ021 (80pin)

LCD module

CNJ012 (12pin)

CNJ031 (D-SUB 9pin)

ECG Control Board

2 pin

5 pin

CNA015

CNJ013 (6pin)

Inverter board

CNJ043 (mini jack)

CNA013

CNJ041 (mini jack)

Thermal head

CNJ011 (12pin)

CN11 (3pin)

CN31 (16pin)

Power Unit

CN021

CNJ035 (30pin)

CNJ091 (D-SUB15pin)

source

(30pin)

SIO

EXT-IN

CRO

Patient Input

CN51 (4pin)

CNA014

Battery

Service Manual ECG-9010/9020 Rev B

1.19

1. GENERAL

Index	Connector No.	NK Code No.	Description
1*	CNA011	543993A	ZHR-2 speaker cable (L50)
2	CNA012	544002A	ZHR-12 motor cable (L120, 65)
3	CNA013	544029B	FCN723/DF11(100)/51021(40)
4	CNA014	544011A	EHR-4 battery terminal cable (L150)
5	CNA015	544038A	51021-0500/51021-0600 (L50)

*We cannot provide this cable seperately; we can only provide it as part of a complete Speaker assy. Refer to “Speaker Assy” in Section 8.

CNA013

CNA012

CNA015

CNA011

CNA014

1.20	Service Manual ECG-9010/9020 Rev B

Replacement ……………………………………………………………………………………………………….	2.1
Periodic Replacement Schedule ……………………………………………………………………	2.1
Cleaning ……………………………………………………………………………………………………………..	2.2
Cleaning and Greasing Schedules ………………………………………………………………..	2.2
Cleaning the Paper Mark Sensor and Paper Empty Sensor ………………………………	2.2
Cleaning the Motor Rotation Sensor and
Greasing the Motor Gear and Gear Meshed with Motor Gear ……………………………	2.3

Service Manual ECG-9010/9020 Rev A

2C.1

2. MAINTENANCE

This section describes the periodic replacement and cleaning of parts which are required to maintain the instrument in good working condition.

This subsection only describes replacement schedule for parts that need to be periodically replaced. The actual replacement procedures are described in the section for Disassembly and Assembly. Read the whole “Disassembly and Assembly” section, especially its Warnings and Cautions, before replacing any of the parts described here.

Periodic Replacement

Schedule

To maintain the performance of the instrument, the parts listed in the table below must be periodically replaced by qualified service personnel.

Part	NK Code No. Description Recommendation

LCT-1912ANK	332543B
KPT-104-8MGF1-NKC 541816
LM32019T	545946
Motor ASSY	GC-0011
BR2032/1F2	390765

Battery	* See below.
Thermal head	After 30 km of
	recording
LCD Module	After 10000 hours
Motor ASSY	After 1000 hours

Lithium battery ** See below.

*Replace the battery when it cannot last for 30 minutes during battery operation at the temperatures between 20 and30° C.

**Replace the lithium battery on the ECG control board when the No. 08 or 09 system error message appears or after the lithium battery is used for 7 years. The life time of the battery is approx. 7 years.

Service Manual ECG-9010/9020 Rev A

2.1

2. MAINTENANCE

Schedules

Cleaning the Paper Mark

Sensor and Paper Empty

Sensor

This subsection describes the cleaning and greasing procedures for parts that must be cleaned and greased by qualified service personnel. The cleaning procedures for parts that can be cleaned by the user are described in the Operator’s Manual.

To maintain the performance of the instrument, the parts listed in the table below must be regularly cleaned or greased.

Part	Frequency	Performed by
Instrument (external)	After each use	User
Thermal Head	Once a month	User
Platen Roller assy	Once a year	User
Paper Mark Detection Sensor	Once a month	Qualified service personnel
Paper Empty Sensor	Once a month	Qualified service personnel
Motor Sensor	Once a year	Qualified service personnel
Motor Gear and Gear	Once a year	Qualified service personnel
Meshed with Motor Gear

1.Remove the magazine. The illustration below shows the location of the paper mark sensor and paper empty sensor.

2.Use a piece of cotton moistened with alcohol to clean both sensors.

Paper mark sensor

Paper empty sensor

2.2	Service Manual ECG-9010/9020 Rev A

2. MAINTENANCE

1.Detach the top casing from the bottom casing as described in the “Disassembly and Assembly” section.

2.Remove the two screws holding the motor assy to the bottom casing and remove the motor assy.

3.Remove the two screws to expose the motor rotation sensor and photodiode.

Motor assy	Motor rotation sensor and
	photodiode

Motor SENS board

Bottom casing

4.Use a piece of cotton moistened with alcohol to clean the sensor and photodiode.

5.Use a brush to clean the holes in the gear.

Service Manual ECG-9010/9020 Rev A

2.3

2. MAINTENANCE

6.Use EM-50L (NK code No. 547712) grease to grease the motor gear and the gear which directly meshes with the motor gear as shown below.

Top view

Motor gear

Gear meshed	Motor
with motor gear

7.Reattach the MOTOR SENS board to the motor with the two screws.

8.Reattach the motor assy to the bottom casing with the two screws.

9.Reattach the top casing to the bottom casing as described in the “Disassembly and Assembly” section.

2.4	Service Manual ECG-9010/9020 Rev A

Section 3 Troubleshooting and

System Error Message

Troubleshooting Flowchart …………………………………………………………………………………….	3.1
Troubleshooting Table……………………………………………………………………………………………	3.4
Troubleshooting General Operation Problem …………………………………………………..	3.4
Troubleshooting Recording Problem ………………………………………………………………	3.6
System Error Message …………………………………………………………………………………………	3.7

Service Manual ECG-9010/9020 Rev A

3C.1

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

This section describes how to troubleshoot the instrument, using the following:

—flowchart

—troubleshooting table

—system error messages at power-up

Use the troubleshooting flowchart to find the possible sources of a problem.

Troubleshooting Flowchart

<ECG-9020K only>

The power LED is on but there is no LCD display.

Is the LCD backlight on?

Yes

Is there any response when No any switch is pressed?

Yes

Check the cable connection to the CNJ012 connector on the ECG control board.

Normal

The LCD unit is faulty.

Is the cable firmly	Yes	The ECG control board is faulty.
connected to the CNJ013			The Inverter board is faulty.
connector on the ECG

control board?


The ECG control board
is faulty.

Service Manual ECG-9010/9020 Rev A

3.1

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

The power of the instrument does not turn on.

Does the instrument

operate during AC

power operation?

Yes

Does the LED of the AC power

Check the cable connections

light?

to the CNJ013 connector on

the ECG control board and

Yes

the connector on the Inverter

board.

The membrane key is faulty.

Normal

The ECG control board is faulty.

The power board is faulty.

Check the F0102 battery

fuse on the power board.

Normal

The instrument does not

operate during battery

power operation.

The power board is faulty.

Is the battery charged?

Charge the battery.

Yes

Check the cable connection

to the CN51 connector on

the power board.

Normal

Yes

Is the F0102 battery fuse

Replace the F0102 battery

on the power board blown?.

fuse on the power board.

The power unit is faulty.

3.2	Service Manual ECG-9010/9020 Rev A

The recorder does not feed the recording paper when the Start switch is pressed.

Does the LED for the Start No switch light up?

Yes

Does the recorder print when the recording paper is manually pulled out from under the thermal head?

Yes

Check the cable connection to the CNJ036 connector on the ECG control board.

Normal

The motor is faulty. The ECG control board is faulty.

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Does the recorder print	Yes
in manual mode?

No


Does the paper empty	Yes
mark blink?

No



The ECG control board is
faulty.

Normal

Check the cable connection to the CNJ036 connector

on the ECG control board.

Normal

The ECG control board is faulty.

The paper mark sensor is faulty.

Service Manual ECG-9010/9020 Rev A

3.3

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Attention, consult

Defibrillation-proof

operator’s manual

Type CF applied part

Use the troubleshooting table to locate, identify and solve a problem in the instrument. The problems are divided into general operation and recording. Each category has its own troubleshooting table for fast and easy troubleshooting.

How to use the troubleshooting table

1.Determine which troubleshooting table to use.

2.In the “Problem” column find the trouble item that matches the problem.

3.Do the action recommended in the “Corrective Action” column.

4.If the problem is not solved, do the action for the next possible cause or criteria.

5.If none of the actions solve the problem, contact your nearest Nihon Kohden dealer.

Troubleshooting General

Operation Problem

Problem	Possible Cause/Criteria	Action

The power LED lights but there	Faulty connection to the CN012	Check the connection to the CNJ012
is no display or backlight on the	or CNJ013 connector on the ECG	and CNJ013 connector on the ECG
LCD screen.	control board.	control board.

	Faulty Inverter board.	Replace the Inverter board.

	Faulty LCD module.	Replace the LCD module.

The instrument does not operate	Blown F011 or F012 power unit	Replace the F011 or F012 power unit
during AC power operation.	fuse.	fuse.

	Faulty connection to the CN033	Check the connection to the CNJ033
	or CNJ035 connector on the ECG	and CNJ035 connector on the ECG
	control board.	control board.

	Damaged power cord.	Replace the power cord.

	Faulty power unit.	Replace the power unit.

	Faulty ECG control board.	Replace the ECG control board.

	Damaged membrane key.	Replace the membrane key.

The instrument does not operate	The battery is not charged.	Charge the battery.
on battery power.

	Blown F051 battery fuse.	Replace the F051 battery fuse.

	Damaged battery.	Replace the battery.

	Faulty connection to the CNJ033	Check the connection to the CNJ033
	or CNJ035 connector on the ECG	and CNJ035 connector on the ECG
	control board or the CN031 or	control board and the CN031 and
	CN051 connector on the power	CN01 connector on the power unit.
	unit.

3.4	Service Manual ECG-9010/9020 Rev A

Источник

Contents Conventions Used in this Manual and Instrument …………………………………………. ………………….. ……………………………………… ………………. i Warnings, Cautions and Notes ………………………………………… ………………….. …………………………………………… ……………………………….. ………… i Explanations of the Symbols in this Manual and Instrument ………………………………….. ………………… ……………….. i

General General …………………… ……………………………… …………………… …………………… …………………… …………………..1C.1 ………..1C.1 Introduction …………………………………………………………………………………………………………. 1.1 Service Policy ……………………………………………………………………………………………………… 1.2 Specifications ……………………………………………… ……………………… …………………………………………….. …………………………………………….. ……………………………….. ……….. 1.3 Panel Description …………………………………………… …………………… ……………………………………………… ……………………………………………… ……………………………. ……. 1.5 ECG-9010K Electrocardiograph ……………………………………………………………………. 1.5 Top View …………………………………………………………………………………………… 1.5 Operation Panel ……………………………………………….. ………………………. ………………………………………………… ……………………………….. ……… 1.6 Right Side Panel ………………………………………………………………………………… 1.7 ECG-9020K Electrocardiograph ……………………………………………………………………. 1.8 Top View …………………………………………………………………………………………… 1.8 Operation Panel ……………………………………………….. ………………………. ………………………………………………… ……………………………….. ……… 1.9 Right Side Panel ………………………………………………………………………………. 1.10 Composition …………………………………………….. ……………………. ………………………………………………. ………………………………………………. ……………………………….. ………. 1.11 ECG-9010K Electrocardiograph ………………………………………………………………….. 1.11 ECG-9020K Electrocardiograph ………………………………………………………………….. 1.12 Location ……………………………………………………………………………………………………………. 1.13 Block Diagram …………………………………………….. ……………………… …………………………………………….. ……………………………………………… …………………………….. …….. 1.14 Connection Diagram …………………………………………………………………………………………… 1.15

Maintenance Maintenance ………………….. …………………………….. ………………….. ………………….. ………………….. …………….. ……2C.1 2C.1 Replacement ……………………………………………. ……………………. …………………………………………….. …………………………………………….. ………………………………….. ………….. 2.1 Periodic Replacement Schedule ……………………………………………… ……………………. ……………………………………………… ……………………. 2.1 Cleaning ……………………………………………….. ……………………… ………………………………………………… ………………………………………………… …………………………………… …………. 2.2 Cleaning and Greasing Schedules ………………………………………………………………… 2.2 Cleaning the Paper Mark Sensor and Paper Empty Sensor ………………………………. 2.2 Cleaning the Motor Rotation Sensor and Greasing the Motor Gear and Gear Meshed with Motor Gear ……………………………. …………………. ………… 2.3

Trouble roubleshoot shooting ing and System System Error Error Message Message ……………… …………………. ….3C.1 3C.1 Troubleshooting Flowchart …………………………………………………………………………………….. 3.1 Troubleshooting Table……………………………………………………………………………………………. 3.4 Troubleshooting General Operation Problem …………………………………………………… 3.4 Troubleshooting Recording Problem ………………………………………………………………. 3.6 System Error Message …………………………………………………………………………………………. 3.7

System System Test, Adjustment Adjustment and Setting Setting ………… ………………… ……………… …………. ….4C.1 4C.1 System Test ………………………………………………………………………………………………………… 4.1 Overall ………………………………………………………………………………………………………. 4.1 Calling up the Test Level 1 ……………………………………………………………………………. 4.2 Calling up the Test Level 2 ……………………………………………………………………………. 4.3 Entering the System Test Number …………………………………………………………………. 4.4 Executing the System Test …………………………………………… ……………………. ……………………………………………. ………………………………. ……….. 4.5 Quitting the System Test ………………………………………………………………………………. 4.6 Exiting the System Test Mode…………………. Mode ………………………………………… ……………………………………………. …………………………….. ……… 4.6 Demonstration …………………………………………………………………………………………………….. 4.7 Recorder …………………………………………………………………………………………………………….. 4.8 Thermal Head ……………………………………………………………………………………………………. 4.11 Key …………………………………………… …………………… …………………………………………….. …………………………………………….. ………………………………………………. ………………………. 4.12 Memory ……………………………………………. …………………….. ……………………………………………. ……………………………………………. ……………………………………….. ………………… 4.13 Single Memory Test Mode ………………………………………………………………………….. 4.14 Continuous Memory Test Mode …………………………………………………………………… 4.14 LCD/LED …………………………………………….. ……………………. ……………………………………………….. ……………………………………………….. …………………………………… ………….. 4.15 Input Unit ………………………………………………………………………………………………………….. 4.17 Calibration ………………………………………………… ………………………. …………………………………………………. ………………………………………………… …………………………….. ……. 4.18 Communication …………………………………………….. …………………….. …………………………………………….. …………………………………………….. ……………………………. ……. 4.19 CRO/EXT1 …………………………………………… …………………… ……………………………………………… ……………………………………………… …………………………………… …………… 4.21 System Setup Initialization ……………………………………………. …………………… ……………………………………………….. …………………………………….. ……………. 4.23 ECG Findings List Recording ……………………………………………. …………………….. ……………………………………………. …………………………………. ………….. 4.24 Recording Resolution Setting ………………………………………………………………………………. 4.25 Cue Mark Adjustment …………………………………………………………………………………………. 4.26 Date and Time Setting ………………………………………………………………………………………… 4.28 Setting the Date and Time …………………………………………………………………. 4.28

Board/Unit Board/Unit Description Description ……………….. …………………………. ………………… ………………… ……………..5C.1 ……5C.1 Block Diagram …………………………………………….. …………………….. ……………………………………………… ……………………………………………… ………………………………. ………. 5.1 Power Unit…………………………………………………………………………………………………………… 5.2 ECG Control Board …………………………………………. ………………….. ……………………………………………. ……………………………………………. ……………………………. …….. 5.2 Flash ROM Board ………………………………………………………………………………………………… 5.3 Inverter Board ……………………………………………………………………………………………………… 5.3

Disassembl Disassembly y and Assembly Assembly ………………… ………………………….. …………………. ………………6C.1 …….6C.1 Before You Begin ………………………………………………… ………………………. ………………………………………………… ………………………………………………. ……………………….. 6.1 Warnings and Cautions ……………………………………………………………………………….. 6.1 Required Tools ……………………………………………………………………………………………. 6.1 Board and Unit Location ………………………………………………………………………………. 6.2 Cable Connection ……………………………………………………………………………………….. 6.3 Removing the Top Casing ……………………………………………………………………………………… 6.4 Removing the LCD Assy ………………………………………… …………………… …………………………………………. …………………………………………. ………………………. …. 6.5 Removing the Thermal Head Assy …………………………………………………………………………. 6.6 Removing the Motor Assy ………………………………………….. …………………… …………………………………………… …………………………………………. …………………… 6.8 Removing the Speaker Assy ……………………………………….. ………………….. …………………………………………. ………………………………………… ………………….. 6.9

CONTENTS Removing the Inverter Board ……………………………………………………………………………….. 6.10 Removing the ECG Control Board ………………………………………………………………………… 6.11 Removing the Power Unit…………………………………………………………………………………….. 6.12 Replacing the Thermistor and Termistor Cable ………………………………………………. 6.14 Removing the Battery Terminal Assy …………………………………………………………………….. 6.15 Removing the Magazine Assy ……………………………………………………………………………… 6.16 Removing the Bottom Casing ………………………………………………………………………………. 6.17 Replacing the Fuse on the Power Board………………………………………………………………… 6.18 Replacing the Lithium Battery on the ECG Control Board ………………………………………… 6.19

Replaceable Parts List…………………………………………………..7C.1 General Parts List ………………………………………………………………………………………………… 7.2 Top Casing Assy ………………………………………………………………………………………………….. 7.4 Top Casing Assy, RK-0007 for ECG-9010K …………………………………………………….. 7.4 Top Casing Assy, RK-0009 for ECG-9020K …………………………………………………….. 7.5 Thermal Head Assy, YZ-011H8 ………………………………………………………………………………. 7.6 Motor Assy, GC-0011 ……………………………………………………………………………………………. 7.7 Speaker Assy, RK-0005 ………………………………………………………………………………………… 7.8 Magazine Assy, RH-0001 ……………………………………………………………………………………… 7.9 Battery Terminal Assy, RK-0006 …………………………………………………………………………… 7.10 LCD Assy, VL-0001 …………………………………………………………………………………………….. 7.11 Cart and Fixing Plate ………………………………………………………………………………………….. 7.12 Patient Cable Hanger ………………………………………………………………………………………….. 7.14

Connector Pin Assignment ……………………………………………8C.1 Power Unit…………………………………………………………………………………………………………… 8.1 CN11 (to AC Inlet) ………………………………………………………………………………………. 8.1 CN21 (to ECG control board) ……………………………………………………………………….. 8.1 CN31 (to Thermal Head) ……………………………………………………………………………… 8.1 CN51 (to Battery)………………………………………………………………………………………… 8.1 ECG Control Board ………………………………………………………………………………………………. 8.2 CNJ011 (to Thermal Head) …………………………………………………………………………… 8.2 CNJ012 (to Inverter Board)…………………………………………………………………………… 8.2 CNJ013 (to LCD) ………………………………………………………………………………………… 8.3 CNJ021 (to Flash ROM Board) ……………………………………………………………………… 8.3 CNJ031 (to SIO Connector)………………………………………………………………………….. 8.5 CNJ032 (to Key Connector) ………………………………………………………………………….. 8.5 CNJ033 (to Speaker) …………………………………………………………………………………… 8.6 CNJ035 (to Power Unit) ……………………………………………………………………………….. 8.7 CNJ036 (to Motor) ………………………………………………………………………………………. 8.8 CNJ041 (to CRO Connector) ………………………………………………………………………… 8.8 CNJ043 (to EXT INPUT Connector) ………………………………………………………………. 8.8 CNJ091 (to ECG Connector) ………………………………………………………………………… 8.9 Flash ROM Board ………………………………………………………………………………………………. 8.10 CNJ021 (to ECG Control Board) …………………………………………………………………. 8.10

CONTENTS Inverter Board ……………………………………………………………………………………………………. 8.12 CN1 (to ECG Control Borad) ………………………………………………………………………. 8.12 CN2 (to LCD module) ………………………………………………………………………………… 8.12 External Input/Output Socket ……………………………………………………………………………….. 8.13 SIO Socket ……………………………………………………………………………………………….. 8.13 EXT Input and CRO Output ………………………………………………………………………… 8.13

Conventions Used in this Manual and Instrument Warnings, Cautions and Notes Warnings, cautions and notes are used in this manual to alert or signal the reader to specific information.

WARNING A warning alerts the user to the possible injury or death associated with the use or misuse of the instrument.

CAUTION A caution alerts the user to possible injury or problems with the instrument associated with its use or misuse such as instrument malfunction, instrument failure, damage to the instrument, or damage to other property.

NOTE A note provides specific information, in the form of recommendations, prerequirements, alternative methods or supplemental information.

Explanations of the Symbols in this Manual and Instrument The following symbols found in this manual/instrument bear the respective descriptions as given.

The CE mark is a protected conformity mark of European Community. The products herewith comply with the requirements of the Medical Device Directive 93/42/EEC.

Introduction ………………………………………………………………………………………………………… 1.1 Service Policy …………………………………………………………………………………………………….. 1.2 Specifications……………………………………………………………………………………………………… 1.3 Panel Description ………………………………………………………………………………………………… 1.5 ECG-9010K Electrocardiograph …………………………………………………………………… 1.5 Top View ………………………………………………………………………………………….. 1.5 Operation Panel ………………………………………………………………………………… 1.6 Right Side Panel ……………………………………………………………………………….. 1.7 ECG-9020K Electrocardiograph …………………………………………………………………… 1.8 Top View ………………………………………………………………………………………….. 1.8 Operation Panel ………………………………………………………………………………… 1.9 Right Side Panel ……………………………………………………………………………… 1.10 Composition ……………………………………………………………………………………………………… 1.11 ECG-9010K Electrocardiograph …………………………………………………………………. 1.11 ECG-9020K Electrocardiograph …………………………………………………………………. 1.12 Location …………………………………………………………………………………………………………… 1.13 Block Diagram …………………………………………………………………………………………………… 1.14 Connection Diagram ………………………………………………………………………………………….. 1.15

1. GENERAL

Introduction This service manual provides useful information to qualified service personnel to understand, troubleshoot, service, maintain and repair the ECG-9010K/9020K Electrocardiograph (referred to as “the instrument” in this service manual). All replaceable parts or units of this instrument and its optional units are clearly listed with exploded illustration to help you locate the parts quickly. The System test, Adjustment and Setting section in this service manual describes the maintenance that should be performed by qualified service personnel. The Maintenance section in the operator ’s manual describes the maintenance that can be performed by the user. The information in the operator’s manual is primarily for the user. However, it is important for service personnel to thoroughly read the operator’s manual and service manual before starting to troubleshoot, service, maintain or repair this instrument. This is because service personnel needs to understand the operation of the instrument in order to effectively use the information in the service manual.

1. GENERAL

Service Policy Nihon Kohden Corporation’s basic policy for technical service is to replace faulty units, printed circuit boards or parts. We do not support component-level repair of boards and units outside the factory for the following reasons: • A special facility is necessary to repair multi-layer boards because most of the

components on the board are SMD (surface mount devices) and most of the circuits employ a gate array method. • To fulfill safety certification requirements, a special facility is necessary to verify

safety as medical equipment after the power unit is repaired.

Corporation’s distributor, please quote the NK code number and part name which is listed in this service manual, and the name or model of the unit in which the required part is located. This will help us to promptly attend to your needs. • Always use parts and accessories recommended or supplied by

Nihon Kohden Corporation to assure maximum performance from your instrument.

1. GENERAL

Waveform, patient information, recording settings, operation mode, heart rate, QRS sync mark, error message, electrode detachment, noise

Program type, version, date and time, paper speed, sensitivity, lead name, filter, hospital name, patient information, timing mark, event mark, electrode detachment, noise

1. GENERAL Power requirement Line voltage

ECG-9010K: approx. 2.5 kg (with battery), approx. 1.9 kg (without battery) ECG-9020K: approx. 2.9 kg (with battery), approx. 2.1 kg (without battery)

Safety Safety standard: IEC601-1 Amendment 1,2 IEC601-2-25 Type of protection against electric shock: AC power:

Batty power: Internally powered equipment Degree of protection against electric shock: Defibrillator proof type CF applied part when patient cable BJ-901D, BJ-902D or BJ-903D is used Degree of protection against harmful ingress of water: Ordinary equipment Degree of safety of application in the presence of a flammable anaesthetic mixture with air, oxygen or nitrous oxide: Not suitable for use in the presence of a flammable anaesthetic mixture with air, oxygen or nitrous oxide Mode of operation: Continuous

1. GENERAL

Name 1. Operation panel 2. Magazine (recording paper container) 3. Magazine release button

1. GENERAL Operation Panel

Name 4. Battery charge lamp 5. Battery operation lamp 6. AC power lamp 7. POWER key/lamp 8. FEED/MARK key 9. FILTER key/lamp 10. COPY/CAL key/lamp 11. START/STOP key/lamp 12. AUTO/MANUAL key/lamp 13. REST/PERIODIC key/lamp 14. AGE key/lamp 15. SPEED key/lamp 16. GAIN key/lamp 17. LEAD keys/lamp 18. QRS sync lamp

1. GENERAL Right Side Panel

“Panel Descriptions” of the ECG-9010K Operator ’s Manual.

Name 19. Patient input connector 20. EXT-IN connector 21. CRO-OUT 22. SIO connector 23. AC power cord socket 24. Battery compartment 25. Equipotential ground terminal

1. GENERAL

1. Operation panel 2. Magazine (recording paper container) 3. Magazine release button 4 .

1. GENERAL Operation Panel

5. Battery charge lamp 6. Battery operation lamp 7. AC power lamp 8. POWER key/lamp 9. MODE key 10 RHYTHM key/lamp 11. FEED/MARK key 12. FILTER key/lamp 13. COPY/CAL key/lamp 14. START/STOP key/lamp 15. AUTO/MANUAL key/lamp 16. F1, F2, F3 function keys 17. AGE key 18. SEX key

1. GENERAL Right Side Panel

“Panel Descriptions” of the ECG-9020K Operator’s Manual.

19. Patient input connector 20. EXT-IN connector 21. CRO-OUT 22. SIO connector 23. AC power cord socket 24. Battery compartment 25. Equipotential ground terminal

1. GENERAL

To order a replacement assembly above, use the Code No.

To order a replacement component inside an assembly, refer to “Section 7 Replaceablet Parts List”.

1. GENERAL

To order a replacement assembly above, use the Code No.

To order a replacement component inside an assembly, refer to “Section 7 Replaceable Parts List ”.

1. GENERAL

Block Diagram NOTE The LCD module and inverter board are used for the ECG-9020K only.

1. GENERAL

Connector No.

NK Code No.

* We cannot provide this cable seperately; we can only provide it as part of a complete Speaker assy. Refer to “Speaker Assy” in Section 8.

Replacement ………………………………………………………………………………………………………. 2.1 Periodic Replacement Schedule …………………………………………………………………… 2.1 Cleaning …………………………………………………………………………………………………………….. 2.2 Cleaning and Greasing Schedules ……………………………………………………………….. 2.2 Cleaning the Paper Mark Sensor and Paper Empty Sensor ……………………………… 2.2 Cleaning the Motor Rotation Sensor and Greasing the Motor Gear and Gear Meshed with Motor Gear …………………………… 2.3

2. MAINTENANCE This section describes the periodic replacement and cleaning of parts which are required to maintain the instrument in good working condition.

Replacement This subsection only describes replacement schedule for parts that need to be periodically replaced. The actual replacement procedures are described in the section for Disassembly and Assembly. Read the whole “Disassembly and Assembly ” section, especially its Warnings and Cautions, before replacing any of the parts described here.

To maintain the performance of the instrument, the parts listed in the table below must be periodically replaced by qualified service personnel.

NK Code No.

* See below.

Lithium battery ** See below.

* Replace the battery when it cannot last for 30 minutes during battery operation at the temperatures between 20 and30 °C. ** Replace the lithium battery on the ECG control board when the No. 08 or 09 system error message appears or after the lithium battery is used for 7 years. The life time of the battery is approx. 7 years.

2. MAINTENANCE

Cleaning and Greasing This subsection describes the cleaning and greasing procedures for parts that must be cleaned and greased by qualified service personnel. The cleaning procedures for parts that can be cleaned by the user are described in the Operator’s Manual.

To maintain the performance of the instrument, the parts listed in the table below must be regularly cleaned or greased.

1. Remove the magazine. The illustration below shows the location of the paper mark sensor and paper empty sensor. 2. Use a piece of cotton moistened with alcohol to clean both sensors.

2. MAINTENANCE

Cleaning the Motor Rotation Sensor and Greasing the Motor Gear and Gear Meshed with Motor Gear

1. Detach the top casing from the bottom casing as described in the “Disassembly and Assembly ” section.

2. Remove the two screws holding the motor assy to the bottom casing and remove the motor assy. 3. Remove the two screws to expose the motor rotation sensor and photodiode.

4. Use a piece of cotton moistened with alcohol to clean the sensor and photodiode. 5. Use a brush to clean the holes in the gear.

2. MAINTENANCE

6. Use EM-50L (NK code No. 547712) grease to grease the motor gear and the gear which directly meshes with the motor gear as shown below.

7. Reattach the MOTOR SENS board to the motor with the two screws. 8. Reattach the motor assy to the bottom casing with the two screws. 9. Reattach the top casing to the bottom casing as described in the “Disassembly and Assembly ” section.

Troubleshooting Flowchart ……………………………………………………………………………………. 3.1 Troubleshooting Table…………………………………………………………………………………………… 3.4 Troubleshooting General Operation Problem ………………………………………………….. 3.4 Troubleshooting Recording Problem ……………………………………………………………… 3.6 System Error Message ………………………………………………………………………………………… 3.7

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE This section describes how to troubleshoot the instrument, using the following: — flowchart — troubleshooting table — system error messages at power-up

Troubleshooting Flowchart Use the troubleshooting flowchart to find the possible sources of a problem.

The power LED is on but there is no LCD display.

Is the LCD backlight on? Yes

Is there any response when No any switch is pressed? Yes

Is the cable firmly connected to the CNJ013 connector on the ECG control board?

Yes

The ECG control board is faulty. The Inverter board is faulty.

The ECG control board is faulty.

Check the cable connection to the CNJ012 connector on the ECG control board. Normal The LCD unit is faulty.

Service Manual ECG-9010/9020 Rev A

3.1

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

The power of the instrument does not turn on.

Does the instrument operate during AC power operation?

Yes Does the LED of the AC power light?

Yes

Check the cable connections to the CNJ013 connector on the ECG control board and the connector on the Inverter board.

The membrane key is faulty. The ECG control board is faulty. The power board is faulty.

Normal Check the F0102 battery fuse on the power board. Normal

The instrument does not operate during battery power operation.

Is the battery charged? Yes

The power board is faulty.

Charge the battery.

Check the cable connection to the CN51 connector on the power board. Normal Yes Is the F0102 battery fuse on the power board blown?.

Replace the F0102 battery fuse on the power board.

No The power unit is faulty.

3.2

Service Manual ECG-9010/9020 Rev A

3. TROUBLESHOOTING AND AND SYSTEM ERROR MESSAGE MESSAGE

The recorder does not feed the recording paper when the Start switch is pressed.

Does the LED for the Start No switch light up? Yes Does the recorder print when the recording paper is manually pulled out from under the thermal head?

Does the recorder print in manual mode?

Yes

Normal

Does the paper empty mark blink? No

Yes

Check the cable connection to the CNJ036 connector on the ECG control board. Normal

Yes Check the cable connection to the CNJ036 connector on the ECG control board. Normal

The ECG control board is faulty.

The ECG control board is faulty. The paper mark sensor is faulty.

The motor is faulty. faulty. The ECG control board is faulty.

Ser vice Manual ECG-9010/9020 Rev A

3.3

3. TROUBLESHOOTING AND SYSTEM ERROR ERROR MESSAGE

Troubleshoo rouble shooting ting Table Table Use the troubleshooting table to locate, identify and solve a problem in the instrument. The problems are divided into general operation and recording. Each category has its own troubleshooting table for fast and easy troubleshooting.

How to use the troubleshooting table 1. Determin Determinee which trouble troubleshoo shooting ting table table to use. 2. In the “Problem” column find the trouble item that matches the problem. 3. Do the the action action recommen recommended ded in in the “Corrective Action” column. 4. If the problem problem is not solved, solved, do the action action for the next next possible cause cause or criteria. criteria. 5. If none of the actions actions solve solve the problem, problem, contact your your nearest Nihon Nihon Kohden Kohden dealer.

Troubleshooting General Operation Problem Problem

Possible Cause/ Criteria

Action

The power LED lights but there

Faulty connection to the CN012

Check the connection to the CNJ012

is no display or backlight on the

or CNJ013 connector on the ECG and CNJ013 connector on the ECG

LCD screen.

control board.

Faulty Inverter b oard.

Replac e the Inverter b oard.

Faulty LCD module.

Replace the LCD module.

The instrument does not operate

Blown F011 or F012 power unit

Replace the F011 or F012 power unit

during AC power operation.

fuse.

Faulty connection to the CN033

Check the connection to the CNJ033

or CNJ035 connector on the ECG and CNJ035 connector on the ECG

The instrument does not operate

control board.

Damaged power cord.

Replace the power cord.

Faulty power unit.

Replace the power unit.

Faulty ECG control rol boa board.

Rep Replace the the EC ECG co control rol boa board.

Dama amaged membr mbrane key.

Replac lace the membr mbrane key.

The batte ttery is not ch charg arged.

Charg arge the the ba batter tery.

Blow lown F0 F051 batt attery fus fuse.

Replace th the F0 F051 batt attery fus fuse.

Damaged battery.

Replace the battery.

Faulty connection to the CNJ033

Check the connection to the CNJ033

on battery power.

or CNJ035 connector on the ECG and CNJ035 connector on the ECG control board or the CN031 or

control board and the CN031 and

CN051 connector on the power

CN01 connector on the power unit.

unit.

3 .4

Ser vice Manual ECG-9010/9020 Rev A

3. TROUBLESHOOTING AND AND SYSTEM ERROR MESSAGE MESSAGE

Problem

No key or swi switch operatio tion.

Possible Cause/Criteria

Action

Damaged membrane key.

Repl eplace the membrane key.

Faulty connection to the CNJ033

Check the connection to the

connector on the ECG control

CNJ033 connector on the ECG

board.

control board.

Faulty ECG ECG control rol bo board.

Replace ace the the ECG control rol bo board.

Only certain electrode lead

The electrodes or cables

Make sure that al electrodes and

waveforms are displayed on the

connections from the patient to

cables connection from the patient

screen or noise appears on the

the instrument is not properly

to the instrument are properly

waveform.

connected.

Faulty ECG ECG control rol bo board.

Replace ace the the ECG control rol bo board.

No electrode lead waveforms are

Electrodes not attached to the

Make sure that the electrodes are

displayed on the screen or noise

patient.

properly attached to the patient.

Faulty ECG ECG control rol bo board.

Replace ace the the ECG control rol bo board.

Vertical and horizontal strips

Faulty connection to the CNJ013

Check the connection to the

appear on the LCD screen at

connector on the ECG control

CNJ013 connector on the ECG

constant intervals.

board.

control board.

Faulty ECG ECG control rol bo board.

Replace ace the the ECG control rol bo board.

Faulty LCD unit.

Replace the LCD unit.

Check the connection to the

CNJ032 connector on the ECG

control board.

Faulty spea ker.

Replac e the spea ker assy.

appears on all waveforms.

No sound.

Ser vice Manual ECG-9010/9020 Rev A

3.5

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Troubleshooting Recording Problem Problem

Possible Cause/Criteria

Action

The recorder does not feed the Dirty paper mark sensor.

Clean the paper mark sensor.

recording paper when the Start switch is pressed. Faulty connection to the CNJ033

Check the connection to theCNJ033

or CNJ036 connector on the ECG and CNJ0336 connectors on the ECG control board.

control board.

Damaged membrane key.

Replace the membrane key.

Faulty ECG control board.

Replace the ECG control board.

Faulty motor.

Replace the motor.

The recording paper is fed but The thermal head is incorrectly

Readjust the position of the thermal

there is no printing.

positioned.

head.

Faulty connection to the CNJ011

Check the connection to the CNJ011

connector on the ECG control

connector on the ECG control board

board or the CN031 connector on and the CN031 connector on the

The paper mark cannot be

the power unit.

power unit.

Faulty thermal head.

Replace the thermal head.

Faulty power unit.

Replace the power unit.

Faulty ECG control board.

Replace the ECG control board.

Dirty paper mark sensor.

Clean the paper mark sensor.

Faulty connection to the CNJ036

Check the connection to the CNJ036

connector on the ECG control

connector on the ECG control board.

detected.

board. Faulty ECG control board.

Replace the ECG control board.

Faulty paper mark sensor board.

Replace the paper mark sensor board.

Sometimes the recorder does

The input protection circuit which Check the electrode attachment to the

not print and blank recording

protects the thermal head from

paper is fed from the recorder. strong noise like hum is rejecting The recording paper tracks

patient, and if necessary, re-position the electrodes so that a good ECG

noisy waveforms.

waveform is displayed.

Dirty thermal head.

Clean the thermal head.

The recording paper is not

Make sure that the recordig paper is

properly set in the instrument.

aligned with the lower recording

zigzag or to one side.

paper guide The thermal head is incorrectly

Readjust the position of the thermal

positioned.

head.

Inaccurate or worn out platen

Replace the magazine assy.

roller.

3.6

Service Manual ECG-9010/9020 Rev A

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

System Error Message During power-up and operation the instrument continuously checks itself for system failure. If a failure is detected, system information and error history are printed on the recording paper and all operations are stopped. System information and error history are also displayed (ECG-9020 only) or printed due to transient noise. After printing the system information and error history, the power of the instrument is automatically turned off.

NOTE If the same system information appears again after restarting the instrument, do not use the instrument until service personnel has corrected the cause of the problem. Sending a copy of the system information to your nearest Nihon Kohden distributor helps us to troubleshoot your problem quickly. System Information Indicates an error number to identify the problem. To solve the problem, do the corrective action described below. Error No.

«00»

Corrective Action

Meaning

Input unit error: An interrupt signal of 2 ms

Replace the ECG control board.

is generated. «01»

Input unit error: There is no response to the

Replace the ECG control board.

host. «02»

Input unit error: Communication protocol

Replace the ECG control board.

error. «03»

4 bit CPU error: Initialization error.

Replace the ECG control board.

«04»

4 bit CPU error: «No response» error.

Replace the ECG control board.

«05»

A key on the operaton panel is short-

Replace the membrane key.

circuited. «06»

RTC error: No interrupt signal of 125 ms.

Replace the ECG control board.

«07»

RTC error: Incorrect data in SRAM.

Replace the ECG control board.

«08»

All the system setup settings other than the

«Error 08» appears once after the lithium

items described in the following note are

battery is replaced. Corrective action is not

returned to the factory initial settings. This

required.

is because the lithium battery is replaced. «09»

Lithium battery is completely discharged.

Replace the lithium battery.

«10»

Bus error.

Replace the ECG control board.

«11»

Address error.

Replace the ECG control board.

Service Manual ECG-9010/9020 Rev A

3.7

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Error No.

Corrective Action

Meaning

«12»

Illegal command.

Replace the ECG control board.

«13»

Zero division error.

Replace the ECG control board.

«14»

Power off time out.

Replace the ECG control board.

«15»

EEPROM error: This occurs due to the

Replace the ECG control board.

EEPROM check error, installed language error or communication error between the host and EEPROM. «16»

Local language flash memory error.

Replace the ECG control board.

«17»

ECG model error.

Replace the ECG control board.

«18»

Local language is not installed.

Install the local language.

«19»

Local language is not installed.

Install the local language.

Error in memory area for local language.

Re-install the local language.

Local language text file version does not

Install the local language text file which is

match the ECG software version.

the same version as the ECG software.

ECG interpretation error (Time over).

Check the input waveforms. If any noise is

«20»

«21»

superimposed on the waveforms, find and eliminate the cause. If no noise is superimposed on the waveform, replace the ECG control board. «22»

The entered information does not match the

Replace the ECG control board.

data in the flash memory.

NOTE •

“Error 05” also appears when any key on the operation panel is pressed and held down.

•

When “Error 08” appears, the following settings are not reset to the factory initial settings even if the instrument is initialized. — display language

—

hum filter

— hospital name

—

direct/modem connection

— recording resolution setting —

cue mark position

— elapsed time

local language font

—

— saved ECG data

3.8

Service Manual ECG-9010/9020 Rev A

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Error History Indicates the latest three errors and the date of the latest error, as in the example below. ********** System Information ********** Error number:

Date:

Apr 20, 1998 10:41 AM

Program:

9020K

Version:

01-00 01-01 01-01

********** Error History ********** No.1

Error number: 15 Apr 20, 1998 10:30 AM

No.2

Error number: 15

No.3

Error number: 15

NIHON KOHDEN Mon Apr 20, 10:41 11 JST 1998

Service Manual ECG-9010/9020 Rev A

3.9

Section 4

System Test, Adjustment, And Setting

System Test ……………………………………………………………………………………………………….. 4.1 Overall ……………………………………………………………………………………………………… 4.1 Calling up the Test Level 1 …………………………………………………………………………… 4.2 Calling up the Test Level 2 …………………………………………………………………………… 4.3 Entering the System Test Number ………………………………………………………………… 4.4 Executing the System Test …………………………………………………………………………… 4.5 Quitting the System Test ……………………………………………………………………………… 4.6 Exiting the System Test Mode ………………………………………………………………………. 4.6 Demonstration ……………………………………………………………………………………………………. 4.7 Recorder ……………………………………………………………………………………………………………. 4.8 Thermal Head …………………………………………………………………………………………………… 4.11 Key ………………………………………………………………………………………………………………….. 4.12 Memory……………………………………………………………………………………………………………. 4.13 Single Memory Test Mode …………………………………………………………………………. 4.14 Continuous Memory Test Mode ………………………………………………………………….. 4.14 LCD/LED ………………………………………………………………………………………………………….. 4.15 Input Unit …………………………………………………………………………………………………………. 4.17 Calibration ………………………………………………………………………………………………………… 4.18 Communication …………………………………………………………………………………………………. 4.19 CRO/EXT1 ……………………………………………………………………………………………………….. 4.21 System Setup Initialization ………………………………………………………………………………….. 4.23 ECG Findings List Recording………………………………………………………………………………. 4.24 Recording Resolution Setting ……………………………………………………………………………… 4.25 Cue Mark Adjustment ………………………………………………………………………………………… 4.26 Date and Time Setting ……………………………………………………………………………………….. 4.28 Setting the Date and Time …………………………………………………………………………. 4.28

Service Manual ECG-9010/9020 Rev A

4C.1

4. SYSTEM TEST, ADJUSTMENT AND SETTING This section describes: •

how to check the operation of the instrument in the System Test mode.

•

how to output the ECG findings list in the System Test mode.

•

how to initialize the system in the System Test mode.

•

how to adjust the thermal head recording resolution and recording paper cutting position in the System Test mode.

•

how to set date and time in the System Setup mode.

System Test Overall

The instrument has two System Test modes: Test level 1 for operator and Test level 2 for qualified service personnel. The test items marked with * perform the same test in Test levels 1 and 2. Each Test level consists of the following system t est items: Test level 1

Test level 2

•

Demonstration

•

Recorder

•

Recorder

•

Thermal head

•

Key*

•

Recording resolution setting

•

Memory*

•

Key*

•

LCD/LED*(1)

•

Memory (single)*

•

Input unit*

•

Memory (continuous)

•

Calibration*

•

LCD/LED*(1)

•

Communication*

•

Input unit*

•

CRO/EXT1*

•

Calibration*

•

System Setup Initialization*

•

Communication*

•

ECG Findings List Recording

•

CRO/EXT1*

•

System Setup Initialization*

•

Cue mark adjustment

(1)

LCD is checked for the ECG-9020K only.

NOTE In the description of some test items in this section, whenever it is appropriate, a description of the source of problem and its corrective action will be described in table form for fast and easy troubleshooting. If none of the actions solve the problem, contact your Nihon Kohden representative.

Service Manual ECG-9010/9020 Rev A

4.1

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Calling up the Test Level 1

1. If the power is on, turn it off.

NOTE Release the FEED/MARK key immediately after the instrument starts printing. If you continue to hold the FEED/MARK key for more than 15 seconds, the instrument recognizes that the FEED/MARK key is short-circuited and prints the system information “Error 05” at the end of printing. 2. Press the POWER key while pressing the FEED/MARK key. Hold the FEED/ MARK key until the instrument begins to print the system test procedure, relationship between the input number and its corresponding key name on the operation panel and system test number li st as shown below. The Test level 1 is called up and the instrument is in standby mode for entering the system test number. (The System Test screen appears for the ECG-9020K only as shown below.) To cancel printing the following information, press the START/STOP key. The only difference between the ECG-9010K and ECG-9020K printouts is the description of the key explanation. Printout (ECG-9020K) System Test 1: To check system, press system test number, then press START/STOP key. 2: To quit the test, press AUTO/MANUAL key. Key Explanation 0: COPY/CAL 1: F1 2: F2 3: F3 4: AGE 5: SEX 6: MODE 7: RHYTHM 8: FEED/MARK 9: FILTER

Test level 1 Demonstration Recorder Key Memory LCD/LED Input unit Calibration Communication CRO/EX1 System Setup Initialization ECG Findings List Recording

[00] [01] [02] [03] [04] [05] [06] [07] [08] [10] [11]

Sytem Test Screen (ECG-9020K)

4.2

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Calling up the Test Level 2

1. If the power is on, turn it off.

NOTE Release the FEED/MARK key immediately after the instrument starts printing. If you continue to hold the FEED/MARK key for more than 15 seconds, the instrument recognizes that the FEED/MARK key is short-circuited and prints the system information “Error 05” at the end of printing. 2. Press the POWER key while pressing the FEED/MARK and AUTO/MANUAL keys together. Hold the FEED/MARK and AUTO/MANUAL keys until the instrument begins to print the system test procedure, relationship between the input number and its corresponding key name on the operation panel and system test number list as shown below. The Test level 2 is called up and the instrument is in standby mode for entering the system test number. (The System Test screen appears for the ECG-9020K only as shown below.) To cancel printing the following information, press the START/STOP key. The only difference between the ECG-9010K and ECG-9020K printouts is the description of the key explanation. Printout (ECG-9020K) System Test 1: To check system, press system test number, then press START/STOP key. 2: To quit the test, press AUTO/MANUAL key.

Test level 2 Recorder Thermal head Recording resolution setting Key Memory (single) Memory (continuous) LCD/LED Input unit Calibration Communication CRO/EXT1 System Setup Initialization

Key Explanation 0: COPY/CAL 1: F1 2: F2 3: F3 4: AGE 5: SEX 6: MODE 7: RHYTHM 8: FEED/MARK 9: FILTER

[00] [01] [02] [03] [04] [05] [06] [07] [08] [09] [10] [12]

Cue mark adjustment (−4.0 mm) Cue mark adjustment (−3.5 mm) Cue mark adjustment (−3.0 mm) Cue mark adjustment (−2.5 mm) Cue mark adjustment (−2.0 mm) Cue mark adjustment (−1.5 mm) Cue mark adjustment (−1.0 mm) Cue mark adjustment (−0.5 mm) Cue mark adjustment ( 0 mm) Cue mark adjustment (−0.5 mm) Cue mark adjustment (−1.0 mm) Cue mark adjustment (−1.5 mm) Cue mark adjustment (−2.0 mm) Cue mark adjustment (−2.5 mm) Cue mark adjustment (−3.0 mm) Cue mark adjustment (−3.5 mm) System Setup transfer System Setup receiver Reset elapsed time Download font

[13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32]

Sytem Test Screen (ECG-9020K)

Service Manual ECG-9010/9020 Rev A

4.3

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Entering the System Test Number

Use the following keys on the operation panel to enter a 2-digit number for executing the desired system test. The specified system test numbers are indicated in the [ xx] bracket at the right of each system test item on the printout output when the Test level 1 or 2 is called up. Refer to the “Calling up the Test Level X ” section. To delete the entered number, press the AUTO/MANUAL key. To delete a 2-digit number, press the AUTO/MANUAL key twice. At this time, the ones digit number is deleted before the tens digit number is deleted. ECG-9010K Keys and Corresponding Number Values

Number

Key

Number

Key

GAIN

SPEED + GAIN

LEAD < (left arrow)

SPEED + LEAD < (left arrow)

LEAD > (right arrow)

SPEED + LEAD > (right arrow)

FEED/MARK

SPEED + FEED/MARK

FILTER

SPEED + FILTER

Operation panel

9010 Program sheet

For easy reference, place the provided 9010 Program sheet on the operation panel.

ECG-9020K Keys and Corresponding Number Values

Number

Key

Number

COPY/CAL key

SEX key

F1 function key

MODE key

F2 function key

RHYTHM key

F3 function key

FEED/MARK key

AGE key

FILTER key

6 4.4

Key

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Executing the System Test

Press the START/STOP key. For some tests, the System Test screen is displayed during the test as shown below (ECG-9020K only). System Test Screen (ECG-9020K)

If you entered an unspecified number, an alarm occurs. The alarm indication is different between the ECG-9010K and ECG-9020K as follows: •

ECG-9010K:

8 repeating “pips” alarm sound is generated.

•

ECG-9020K:

8 repeating “pips” alarm sound and the “Invalid number. Please re-enter number” error message is displayed as shown below.

To re-enter the system test number, do either of the folowing: •

Delete the previously entered number by pressing the AUTO/MANUAL key.

•

Enter the system test number by overwriting the previously entered number.

Service Manual ECG-9010/9020 Rev A

4.5

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Quitting the System Test

The procedures to quit each system test vary from test to test. Some tests automatically end after an alarm sound is generated or a printout is output. Refer to the following explanations for each test. After quitting each test, the instrument returns to the standby mode for entering the system test number. After a system test is completed, you can execute other system test without exiting the System Test mode .

Exiting the System Test Mode

4.6

After all desired system tests are finished, press the POWER key.

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Demonstration This is used to learn or teach instrument operation. While executing this test item, the instrument generates dummy 12 lead ECG resting waveforms until the power of the instrument is turned off. The ECG waveforms can be recorded and also displayed as shown below (ECG-9020k only).

Procedure Enter the system test number [00] (Test level 1) and press the START/STOP key. To quit the test, turn the power of the instrument off by pressing the POWER key. Dummy 12 lead ECG resting waveforms on LCD

Service Manual ECG-9010/9020 Rev A

4.7

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Recorder This is used to check the condition of the recorder by printing test patterns. The recording test patterns consist of the following and are printed in the following order: 1. Diagonal lines 2. Characters H and X (Test level 1 only) 3. Grid 4. Paper speed scales (10, 12.5, 25 and 50 mm/s) 5. Paper mark detection The recorder test of Test level 1 contains the same recorder test and thermal head test as Test level 2. With regard to the check procedure for characters H and X, refer to the “Thermal Head” section.

Procedure Enter the system test number [01] (Test level 1) or [00] (Test level 2) and press the START/STOP key. The following test patterns are printed. This test automatically ends after the folowing has been printed. The instrument returns to the standby mode for entering the system test number. Printout of Test level 1

Not printed in Test level 2. Refer to the “Thermal Head” section for this check. Paper mark

Small rectangle printed when the paper mark is detected. 4.8

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING Check Procedure for Diagonal Lines Check that all the diagonal lines are evenly and completely printed.

Corrective Action

Possible Source of Problem

A dirty thermal head can cause some parts to be unevenly or incompletely printed.

1. Clean the thermal head with the thermal head cleaner pen. 2. If this does not fix the problem, replace the thermal head.

A faulty thermal head can cause some parts at a certain position to be unevenly or incompletely printed.

1. Clean the thermal head with the thermal head cleaner pen. 2. If this does not fix the problem, replace the thermal head.

Check Procedure for Grid Check that all the parts of the grid are clearly, evenly and completely printed. Corrective Action

Possible Source of Problem

A faulty ECG control board can cause all or Replace the ECG control board. some parts to be unclear, unevenly or incompletely printed.

Check Procedure for Paper Speed Scales Check that the accuracy of each paper speed during actual recording is within 2%. The scales for 4 seconds at 10 mm/s and 12.5 mm/s paper speeds and the scales for 2 seconds at 25 mm/s and 50 mm/s paper speeds are consecutively printed. For example, the length for 4 seconds on the time scale printed at 10 mm/s paper speed must be within 39.2 mm to 40.8 mm. Corrective Action

Possible Source of Problem

Badly positioned thermal head.

1. Adjust the thermal head position. 2. If this does not fix the problem, replace the thermal head.

Damaged, deformed or badly positioned

1. Check the motor gear and its position.

motor gear.

2. If this does not fix the problem, replace the motor gear.

Dirty motor rotation sensor.

Clean the motor rotation sensor as described in the «Maintenance» section.

Loose or damaged axle.

Tighten and check the axle as described in the «Disassembly and Assembly» section.

Faulty motor.

Replace the motor.

Faulty ECG control board.

Replace the ECG control board.

Service Manual ECG-9010/9020 Rev A

4.9

4. SYSTEM TEST, ADJUSTMENT AND SETTING Check Procedure for Paper Mark Detection In one complete recorder test, a small rectangle is printed near each paper mark if the paper mark is correctly detected by the mark sensor. (Refer to “Cleaning and Greasing ” in Section 2 for the location of the mark sensor.) Check that a small rectangle is printed before each paper mark on the second and third pages only. Corrective Action

Possible Source of Problem

If the paper mark is not occasionally

Clean the paper mark sensor as described

detected, the paper mark sensor is dirty.

in the «Maintenance» section.

If the paper mark is not detected at all, the

Replace the paper mark sensor board.

paper mark sensor board is faulty.

About paper mark Every page of recording paper has a paper mark at the lower right corner. Pages are divided by broken lines. In the automatic recording, the recording stops after the paper mark is detected by the mark sensor. This enables the next printing to start from the beginning of the next page.

Broken line Paper feed direction Small rectangle Paper mark

4.10

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Thermal Head This is used to check the condition of the thermal head by printing out the characters “H” and “X” continually.

Procedure Enter the system test number [01] (Test level 2) and press the START/STOP key. The characters “H” and “X” are printed as follows. To quit the test, press the AUTO/MANUAL key and the instrument returns to the standby mode for entering the system test number. Printout of Thermal Head Test Result

H H H H H H H H H H H H H

XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX

H H H H H H H H H H H H H

XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX

H H H H H H H H H H H H H

XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX

H H H H H H H H H H H H H

XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX

H H H H H H H H H H H H H

XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX XXXXX

Check Procedure for Characters H and X Check that all the parts of the characters “H” and “X” are clearly, evenly and completely printed and that the characters are not printed zigzag or diagonally. Corrective Action

Possible Source of Problem

Incorrectly set thermal head recording

Adjust the thermal head recording resolution

resolution setting.

as described in this section.

Faulty cable connection to the CNJ011

Check the cable connections to the CNJ011

connector on the ECG control board or the

connector on the ECG control board and the

CN031 connector on the power unit.

Faulty power unit.

Replace the power unit.

Badly positioned recorder component.

Check and adjust the recorder component position.

Service Manual ECG-9010/9020 Rev A

4.11

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Key This is used to check the condition of the keys on the operation panel.

Procedure 1. Enter the system test number [02] (Test level 1) or [03] (Test level 2) and press the START/STOP key. 2. Press the key on the operation panel. The name of the pressed key is printed if the key is functioning correctly. To quit the test, press the AUTO/MANUAL key. The instrument returns to the standby mode for entering the system test number.

NOTE The POWER and AUTO/MANUAL keys cannot be checked by this test. To check if these two keys are functioning correctly, do the following: •

POWER key Check that the power of the instrument is on or off when the POWER key is turned on or off.

•

AUTO/MANUAL key Check that the Key test is stopped by pressing the AUTO/MANUAL key.

Check Procedure for Operation Panel Key Check that the name of the pressed key is printed. Possible Source of Problem

Damaged membrane key.

4.12

Corrective Action

Replace the membrane key.

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Memory This is used to check the condition of the memory by comparing the data of the test patterns written to and read from each memory area. The instrument provides two memory test modes: single and continuous. When single memory test mode is selected, entire memory is tested once. When continuous memory test mode is selected, the memory is continuously tested until the AUTO/MANUAL key is pressed. The number of “Count of test ” increases by one each time the entire memory test is tested. One complete memory test takes about 30 seconds. If no fault is detected, an “OK” message appears for each memory. If a fault is detected, an “Error” message appears and the number of “Error count” for each memory increases by one.

Printout of Memory Test Result

Memory test result (Count of test:

Main memory (BIT/ADR) Recorder memory (BIT/ADR) VRAM (BIT/ADR) Program ROM Flash memory Input unit SRAM Input unit ROM Input unit EEPROM File memory

OK Error (E88004/000000h) Error (C10000h/C10004h) OK NONE Error OK OK Error

Hospital Model Version Input unit version Analizing version Date Cardiograph internal temp

NIHON KOHDEN HOSPITAL 9020K 01-01 01-01 01-01 Apr 24, 1998 10:41 AM 46.5 C

Elapsed time Thermal head temperature Battery voltage

0 hours 36.0 C 13.4 V

Service Manual ECG-9010/9020 Rev A

Error count 0 1 1 0 0 1 0 0 1

4.13

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Single Memory Test Mode

This mode tests the entire memory once. You can use this mode to fully check all memory if a memory problem frequently occurs.

Procedure Enter the system test number [03] (Test level 1) or [04] (Test level 2) and press the START/STOP key. After the test, the test result is automatically printed. When the test result is completely printed, a “bing bong” alarm sound is generated and instrument returns to the standby mode for entering the system test number. To cancel the test or cancel printing the test result, press the AUTO/MANUAL key.

Check Procedure for Single Memory Test Mode Check that no “Error” messages appear. Corrective Action

Possible Source of Problem

Faulty memory on the ECG control board.

Replace the ECG control board. Each memory mounted on the ECG control board cannot be replaced at memory component level.

Continuous Memory Test Mode

This mode continues testing the entire memory until the AUTO/MANUAL key is pressed. You can use this mode to check an intermittent memory problem.

Procedure Enter the system test number [05] (Test level 2) and press the START/STOP key. To print the test result without quitting the test, press the START/STOP key. All results of the tests performed until the START/STOP key are pressed is printed on one page. To cancel the test, press the AUTO/MANUAL key. All results of the tests performed until the START/STOP key is pressed are printed on one page. When the test result is completely printed, 8 repeating “pips” alarm sound is generated and the instrument returns to the standby mode for entering the system test number.

Check Procedure for Continuous Memory Test Mode Check that no “Error” messages appear. Corrective Action

Possible Source of Problem

Faulty memory on the ECG control board.

Replace the ECG control board. Each memory mounted on the ECG control board cannot be replaced at memory component level.

4.14

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

LCD/LED This is used to check all LEDs on the operation panel, LED/LCD control circuit and all dots on the LCD (ECG-9020K only). First, the LCD test starts and after the LCD test is complete, the LED test starts. The LCD test is not performed for the ECG-9010K.

LCD Test (ECG-9020K only) The LCD displays the following four types of test patterns every two seconds in the following order: 1. Diagonal lines are displayed. 2. Entire LCD lights up. 3. LCD is completely dark but backlight lights. 4. Backlight does not light. The LCD image for each pattern changes as follow:

LED Test The LEDs on the operation panel light up by one and remain lit until all LEDs light up. After all LEDs light up, they go out at a time.

NOTE With regard to the LEDs of Battery charge lamp, AC power lamp and POWER lamp, check if they are in the following condition during the LED/LCD test: •

Battery charge lamp:

Not lit (This lamp indicates the remaining battery power before and after the LED test during battery operation.)

Service Manual ECG-9010/9020 Rev A

•

AC power lamp:

Lit

•

POWER lamp:

Lit when AC power is used

4.15

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Procedure Enter the system test number [04] (Test level 1) or [06] (Test level 2) and press the START/STOP key. After the test, the instrument returns to the standby mode for entering the system test number. To cancel the test, press the AUTO/MANUAL key.

Check Procedure for LCD Test Check that all the dots on the screen light up and go out according to the test pattern. Possible Source of Problem

Corrective Action

Faulty cable connection to the CNJ012 or

Check the cable connections to the CNJ012

CNJ013 connector on the ECG control

and CNJ013 connectors on the ECG control

board.

Faulty LCD module.

Replace the LCD module.

Faulty ECG control board.

Replace the ECG control board.

Check Procedure for LED Test Check that all the LEDs on the operation panel light up. Corrective Action

Possible Source of Problem

4.16

Faulty cable connection to the CNJ012 or

Check the cable connections to the CNJ012

CNJ013 connector on the ECG control

and CNJ013 connectors on the ECG control

board.

Damaged membrane key.

Replace the membrane key.

Faulty ECG control board.

Replace the ECG control board.

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Input Unit This is used to check if the input analog signal processing circuit detects the lead off condition correctly, using the provided input check jig. If each lead is connected when the input analog signal processing circuit works correctly, the “Normal” message is printed at the right of each electrode lead name in the test

result. If a lead is not connected, the “Error” message is printed. The following is an example printout of the input unit test result when the R(RA) lead is disconnected. Input unit test result RF (RL) R (RA) L (LA) F (LL) C1 C2 C3 C4 C5 C6

Normal Error Normal Normal Normal Normal Normal Normal Normal Normal

Procedure 1. Connect the electrode lead to the instrument. 2. Attach all tips of each electrode lead to the input check jig.

Input check jig

3. Enter the system test number [05] (Test level 1) or [07] (Test level 2). 4. Disconnect one of the leads from the check jig and press the START/STOP key. The disconnected lead name is printed out. 5. Repeat steps 3 and 4 for all leads by one. To quit the test, press the AUTO/MANUALl key. The instrument returns to the stanby mode for entering the system test number.

Check Procedure for Input Unit Test Check that the lead off condition is detected correctly. Possible Source of Problem

Corrective Action

Faulty ECG control board.

Replace the ECG control board.

Faulty input check jig.

Replace the input check jig.

Service Manual ECG-9010/9020 Rev A

4.17

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Calibration This is used to check the sensitivity and time constant of the input analog signal processing circuit. After starting the test, the CAL waveforms for leads I, II and V1 to V6 are printed as shown below. If all the rectangular printed CAL waveforms have the amplitude of 1 mV and time constant of more than 3.2 seconds, the sensitivity and time constant of the input analog signal processing circuit are normal.

Procedure Enter the system test number [06] (Test level 1) or [08] (Test level 2) and press the START/STOP key. After all CAL waveforms for eight leads are printed, the test automatically ends and the instrument returns to the standby mode for entering the system test number. To cancel the test, press the START/STOP key or AUTO/MANUAL key. The instrument returns to the standby mode for entering the system test number.

Check Procedure for Calibration Waveforms Check that all the rectangular printed CAL waveforms match the following conditions in the illustration below: •

Amplitude when CAL waveform is risen:

10 mm±2%

•

Amplitude of point which is 25 mm :

more than 7.3 mm

from the rising point of the CAL waveform

more than 7.3 mm

10 mm±2%

25 mm Possible Source of Problem

Faulty ECG control board.

4.18

Corrective Action

Replace the ECG control board.

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Communication This is used to check the external communication input/output line of the instrument, using the check jig. The instrument has one standard communication connector (SIO). This test is performed by comparing the original test patterns sent from the output line with the test patterns received at the input line. If any received test pattern is different from its original, a “Error” message is printed. A “Normal” message is printed if the communication line is normal. With regard to TxD-RxD line, if the same data is printed, the line is normal. Every time the test of one set is repeated, the number of “Count of test” increases by one. Every time the error is detected during continuous test, the “Error count” increases by one. The test of one set takes about 5 seconds. The following is an example printout of the communication test result. Communication test result (Count of test:

1) Error count 0

DTR-DSR: RTS-CTS: TxD: RxD: Hospital Model Version Input unit version Analizing version Date Cardiograph internal temp

Normal Normal 00 00 NIHON KOHDEN HOSPITAL 9020K 01-01 01-01 01-01 Apr 24, 1998 10:41 AM 46.5 C

Preparation A locally made check jig is required for the test. To make the check jig, short-ciruit the pins as shown below.

Connector Pin Assigment 1.

TXD

RXD

RTS

CTS

DSR

GND

DTR

Mating Connector Connector:

HDEB-9PF (05)

Case:

HDE-CTH

Service Manual ECG-9010/9020 Rev A

4.19

4. SYSTEM TEST, ADJUSTMENT AND SETTING Procedure 1. Connect the check jig to the SIO socket of the instrument. 2. Enter the system test number [07] (Test level 1) or [09] (Test level 2) and press the START/STOP key. The instrument prints the test result of each test if the instrument detects an “Error”.

To print the test result without quiting the test, press the START/STOP key. The results of all tests performed until the START/STOP key are pressed are printed. You can see the test number and the number of errors on “Count of test” and “Error count” on the printout, respectively.

To quit the test, pr ess the AUTO/MANUAL key. The instrument prints the results of all tests performed until the AUTO/MANUAL key is pressed. When the test result is completely printed, 8 repeating “pips” sound is generated and the instrument returns to the standby mode for entering the system test number.

Check Procedure for Serial Communication Check that no error messages appear.

Possible Source of Problem

Faulty ECG control board.

4.20

Corrective Action

Replace the ECG control board.

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

CRO/EXT1 This is used to check the external output/input terminal, using the check jig. The instrument has the input signal terminal (EXT-IN connector) and output signal terminal (CRO-OUT connector) at the rear of the instrument. In this test, the instrument prints the known triangular waveform signals generated inside the instrument at the lower trace on the recording paper the moment the instrument outputs the signals from the CRO-OUT terminal to the EXT-IN connector. At the same time, the instrument prints the triangular waveform signals input to the EXT-IN connector at the upper trace on the recording paper. There is no delay time between the printed waveforms on the upper and lower traces. The following is an example printout of the CRO/EXT1 test result.

Preparation A locally made check jig is required for the test. To make the check jig, use the two 3.5φ monaural jacks and leads and solder the signal line and ground line of the two jacks with leads as shown below.

Signal line

Ground line

Service Manual ECG-9010/9020 Rev A

4.21

4. SYSTEM TEST, ADJUSTMENT AND SETTING Procedure 1. Connect the check jig to the CRO-OUT/EXT-IN sockets of the instrument. 2. Enter the system test number [08] (Test level 1) or [10] (Test level 2) and press the START/STOP key. To quit the test, press the START/STOP key or AUTO/MANUAL key. The instrument returns to the standby mode for entering the systme test number.

Check Procedure Check that the shape of the two printed triangular waveforms are the same and there is no delay time between them. Possible Source of Problem

Faulty ECG control board.

4.22

Corrective Action

Replace the ECG control board.

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

System Setup Initialization This is used to reset all the system settings to the factory initial settings.

NOTE The following settings are not reset to the factory initial settings even if the instrument is initialized. •

date and time*

•

recording resolution setting* • hospital name**

•

cue mark position*

•

direct/modem connection**

•

elapsed time

•

local language font

•

saved ECG data

•

display language**

For settings marked with *, refer to the following corresponding subsection in this section; for settings marked with **, refer to “Changing Settings Before Measurement (System Setup Screen)” in the ECG-9010K/9020K operator’s manual.

Procedure Enter the system test number [10] (Test level 1) or [12] (Test level 2) and press the START/STOP key. If the initialization is completed, the folloing occurs: •

ECG-9010K: One “bing bong” alarm sound is generated and the instrument returns to the stanby mode for entering the system test number.

•

ECG-9020K: A “System Setup Initialization” message appears with one “bing bong” alarm sound and the instrument returns to the stanby mode for entering the system test number.

Refer to the ECG-9010K/9020K operator ’s manual for the factory initial settings. Following is the LCD display after the system has been initialized.

Service Manual ECG-9010/9020 Rev A

4.23

4. SYSTEM TEST, ADJUSTMENT AND SETTING

ECG Findings List Recording This is used to print out the list of all ECG findings used for the instrument. The instrument informs you of the ECG finding as a result of the ECG interpretation when analyzing the ECG.

Procedure Enter the system test number [11] (Test level 1) and press the START/STOP key. When the list is completely printed, one “bing bong” alarm sound is generated and the instrument returns to the standby mode for entering the system test number. To cancel printing the list, press the START/STOP key or AUTO/MANUAL key. The instrument returns to the standby mode for entering the system test number.

4.24

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, TEST, ADJUSTMENT AND SETTING

Recording Resolution Setting This is used to adjust the thermal head recording resolution after the thermal head is replaced with a new one or when the printout is not clearly, evenly and completely printed. Normally, the resistor value of the heating element on the thermal head is a specific value which varies from thermal head to thermal head. Even if the same energy is applied to the thermal head, the recording quality varies due to the difference of the thermal head resistor value. value. Therefore, adjusting the thermal head recording resolution is required to evenly print regardless of the thermal head resistor value. Do the following procedure to automatically adjust the thermal head recording resolution.

Procedure Enter the system test number [02] [0 2] (Test level 2) and press the START START/STOP /STOP key. After adjustment is completed, the instrument prints out the test result as shown below and returns to the stanby mode for entering the system test number. A number of 1 to 8 is printed at the right of “Thermal head level ” if the thermal head resolution is adjusted correctly. An “Error” is printed when it is necessary that the thermal head is replaced with a new one. The following is an example printout of the Recording Resolution Setting system test.

Thermal head level: 4

Ser vice Manual ECG-9010/9020 Rev A

4.25

4. SYSTEM TEST, TEST, ADJUSTMENT AND SETTING

Cue Mark Adjustment This is used to adjust the distance (mm) between the broken line on the recording paper and paper cutting part on the top casing so that the paper can be just cut at the broken line. The ideal adjustment is that the broken line on the paper lines up with the cutting part on the top casing when cutting the paper.

Procedure 1. Enter the system system test number [21] (Test (Test mode 2) and press the STAR START/STOP T/STOP key to verify the distance between the broken line on the paper and the paper cutting part. The instrument feeds the recording paper with the “Cue mark adjustment (0.0 mm)” message and stops feeding it after a paper mark is detected. The right edge of the paper mark against the paper tracking direction lines up the broken line on the paper. 2. Put the paper to to the paper cutting cutting part as as if the paper paper was cut as shown shown below. below. If the broken line lines up the paper cutting part, you do not have to perform this adjustment. If there is a deviation between the broken line and paper cutting part, go to step 3.

Paper cutting part

Tracking direction Broken line

Paper mark

3. Mark the point where where the paper paper is at the paper paper cutting part. part. 4. Measure the distance distance (mm) between between the broken line line and marked marked point. point.

Measure direction. Marked point

Tracking direction

Apply “+” to

Apply “−” to

measured value.

measured value. Broken line Paper mark

5. Apply Apply the plus plus symbo symboll “+” to the measured value when the marked point is before the broken line against the tracking direction of paper or minus symbol “−” to the measured number when the marked point is behind the broken line.

The resulting value is recognized as the adjustment value.

4.26

Ser vice Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, TEST, ADJUSTMENT AND SETTING

The following is a list of the relationship between the adjustment value and its corresponding system test number you should execute.

System Test

Adjustment

System Test

Adjustment

No.

Value (mm)

No.

Value (mm)

[13]

− 4.0

[ 21 ]

0.0

[14]

− 3.5

[22]

+ 0.5

[15]

− 3.0

[23]

+ 1.0

[16]

− 2.5

[24]

+ 1.5

[17]

− 2.0

[25]

+ 2.0

[18]

− 1.5

[26]

+ 2.5

[19]

− 1.0

[27]

+ 3.0

[20]

− 0.5

[28]

+ 3.5

6. Enter Enter the appropr appropriate iate syste system m test numbe numberr [ xx] and press the START/STOP key. The “Cue mark adjustment [ xxx mm]” message is printed and the instrument returns to the standby mode for entering the system test number. number. The adjustment is completed. 7. Verify that the broken broken line line on the paper lines lines up with the the cutting part part on the top casing.

Ser vice Manual ECG-9010/9020 Rev A

4.27

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Date and Time Setting The date and time of the instrument are set in the System Setup mode. In the System Setup mode, you can also set the entire system settings of the instrument which determines the operation conditions of the instrument. Refer to the ECG9010K/9020K operator’s manual for details. This setting is necessary when the back-up battery (lithium battery) is completely or almost completely discharged or replaced with a new one. The life time of the back-up battery is about 7 years. You can note whether the back-up battery is completely or almost discharged by the system error message. Refer to the “System Error Message ” section in Section 3.

Setting the Date and Time

1. Call up the System Setup mode 1) If the power is on, turn it off.

Following is the LCD screen when the year setting mode is called up.

4.28

Service Manual ECG-9010/9020 Rev A

4. SYSTEM TEST, ADJUSTMENT AND SETTING

Year

Enter the system setup number [318]. Month/date

Enter the system setup number [319]. Hour/minute

Enter the system setup number [320]. Second

Enter the system setup number [322]. To cancel the entered number, press the AUTO/MANUAL key.

NOTE You cannot enter numbers for “second” setting. 3. Enter a 4-digit number to enter the new numbers of the year, month/date or hour/minite. The range of the number which is possible to enter is as follows: Year

[1980] to [2079] Month/date

[0101] to [1231] Hour/minute

[0000] to [2359] To cancel the entered number, press the AUTO/MANUAL key. Following is the LCD screen when the year “1998” is entered.

Service Manual ECG-9010/9020 Rev A

4.29

4. SYSTEM TEST, ADJUSTMENT AND SETTING

NOTE • If the START/STOP key is pressed in the “second” setting mode, the

second is reset to “00” seconds and the instrument starts working from “00” seconds. • If the power of the instrument is turned off before the START/STOP

key is pressed, the newly entered numbers are invalid. 4. Press the START/STOP key to save the new numbers. The newly entered numbers are automatically printed. Following is the LCD screen when year “1998” is saved.

If you entered an unspecified number, an alarm occurs. The alarm indication is different between the ECG-9010K and ECG-9020K as follows: •

ECG-9010K: 8 repeating “pips” alarm sound is generated.

•

ECG-9020K: 8 repeating “pips” alarm sound and the “Invalid number. Please re-enter number” error message is displayed.

To re-enter the system test number, do either of the folowing: •

Delete the previously entered number by pressing the AUTO/MANUAL key.

•

Enter the system test number by overwriting the previously entered number.

5. Repeat steps 2 to 4 to enter the new numbers for the other setting. 6. Turn the power of the instrument off to exit the System Setup mode.

4.30

Service Manual ECG-9010/9020 Rev A

Section 5

Board/Unit Description

Block Diagram …………………………………………………………………………………………………….. 5.1 Power Unit ………………………………………………………………………………………………………….. 5.2 ECG Control Board ……………………………………………………………………………………………… 5.2 Flash ROM Board ……………………………………………………………………………………………….. 5.3 Inverter Board …………………………………………………………………………………………………….. 5.3

Service Manual ECG-9010/9020 Rev A

5C.1

5. BOARD/UNIT DESCRIPTION

Block Diagram NOTE The LCD module and inverter board are used for the ECG-9020K only.

Piezo-electric buzzer

CNA011

CNJ032 (2pin)

Flash ROM Board (UT-2357)

Motor, Motor sensor, Mark sensor

CNA012

CNJ036 (12pin)

CNJ011 (80pin)

Membrane key

CNJ033 (40pin) CNJ021 (80pin)

LCD module

CNJ012 (12pin)

2 pin 5 pin

CNA015

Inverter board

Thermal head

CNA013

CNJ013 (6pin)

CNJ031 (D-SUB 9pin)

ECG Control Board (UT-23561) CNJ043 (mini jack)

CNJ041 (mini jack) CNJ011 (12pin)

SIO

EXT-IN

CRO

CN31 (16pin)

AC source

CN11 (3pin)

Power Unit (SC-903D)

CN021 (30pin)

CNJ035 (30pin)

CNJ091 (D-SUB15pin)

Patient Input

CN51 (4pin)

Battery

CNA014

Service Manual ECG-9010/9020 Rev A

5.1

5. BOARD/UNIT DESCRIPTION

Power Unit The Power unit consists of the power source, battery charging and control circuits. The Power unit uses the switching regulation method to produce the power required for the instrument.

ECG Control Board The ECG Control board consists of the following components:

Component

Description

CPU:

MC68EC020 (Operating frequency: 25 MHz)

ROM:

For system software, 2 MB

DRAM:

Main memory, 1 MB

Flash memory:

For font of local language, 1 MB For filing data, 256 KB

Real time clock:

For monitoring back-up battery, built-in 140 B SRAM

Timer:

1 ms timer Interrupt request signal ON/OFF: selectable Operation mode: fixed

Serial interface:

Equivelent to RS-232C, 1 channel Baud rate: 2,400 to 115,200 bps selectable

Speaker circuit:

Beep sound, Sound by noise generator

Interrupt request: Auto-vector method Interface:

To ECG input section

Recorder: LCD: Controller:

For keyboard

A/D converter:

5.2

Service Manual ECG-9010/9020 Rev A

5. BOARD/UNIT DESCRIPTION

Flash ROM Board The Flash ROM board has a 2 MB flash ROM for writing the control program, analysis program, Japanese font and English font to the ROM. Also, there is a space for mounting an EEPROM.

Inverter Board The inverter board produces the power for the LCD backlight module using +12 VDC power from the power unit, and turns on/off the power of the instrument according to the signal from the ECG control board.

Service Manual ECG-9010/9020 Rev A

5.3

Section 6

Disassembly and Assembly

Before You Begin …………………………………………………………………………………………………. 6.1 Warnings and Cautions ………………………………………………………………………………. 6.1 Required Tools …………………………………………………………………………………………… 6.1 Board and Unit Location ……………………………………………………………………………… 6.2 Cable Connection ………………………………………………………………………………………. 6.3 Removing the Top Casing …………………………………………………………………………………….. 6.4 Removing the LCD Assy ………………………………………………………………………………………. 6.5 Removing the Thermal Head Assy ………………………………………………………………………… 6.6 Removing the Motor Assy …………………………………………………………………………………….. 6.8 Removing the Speaker Assy…………………………………………………………………………………. 6.9 Removing the Inverter Board ………………………………………………………………………………. 6.10 Removing the ECG Control Board ……………………………………………………………………….. 6.11 Removing the Power Unit ……………………………………………………………………………………. 6.12 Replacing the Thermistor and Termistor Cable ……………………………………………… 6.14 Removing the Battery Terminal Assy ……………………………………………………………………. 6.15 Removing the Magazine Assy …………………………………………………………………………….. 6.16 Removing the Bottom Casing ……………………………………………………………………………… 6.17 Replacing the Fuse on the Power Board……………………………………………………………….. 6.18 Replacing the Lithium Battery on the ECG Control Board ……………………………………….. 6.19

Service Manual ECG-9010/9020 Rev A

6C.1

6. DISASSEMBLY AND ASSEMBLY The procedures in this section tell how to remove, replace and install major components in the instrument.

Before You Begin Removing, replacing and installing major components should be done by qualified service personnel.

Warnings and Cautions WARNINGS •

To avoid the possibility of injury to yourself or damage to the instrument, do not install or remove any component or change switch settings while the power is on and wait 10 minutes before installing to or removing any component from the instrument after the power is off.

•

To avoid accidental discharge of static electricity which could damage the instrument components, use a wrist ground strap when installing or removing any component of the instrument.

CAUTIONS •

Before connecting or disconnecting any cables, turn off the instrument, unplug the AC power cord from the instrument and remove the rechargeable battery.

•

Fuses cut off the power when an abnormality occurs in the instrument. Eliminate the malfunction before replacing the fuse. Use the correct fuse only. The fuse rating is shown on the holder.

•

Removal and replacement of any component in the instrument should be done by qualified service personnel.

•

Use only parts recommended by Nihon Kohden to assure maximum performance from your instrument.

Required Tools

•

Anti-static bench mat

•

Wrist ground strap

•

Phillips screwdriver (insulated type)

•

Flat-blade screwdriver (insulated type)

•

Hex (Allen) wrench or hex keys

•

Hex driver

•

Tweezers

Service Manual ECG-9010/9020 Rev A

6.1

6. DISASSEMBLY AND ASSEMBLY

Board and Unit Location

The following see-through diagram shows the location of the boards and units in the instrument. See-through Diagram

Thermal Head Assy Motor Assy

Speaker Assy

LCD Assy (for ECG-9020K only) Flash ROM Board

Inverter Board (for ECG-9020K only)

ECG Control Board Power Unit

6.2

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

Cable Connection

The following cable connection diagram shows the connection of the cables in the instrument. Cable Connection Diagram

® CNA013

— CNA012

° CNA015

¬ CNA011

¯ CNA014

Service Manual ECG-9010/9020 Rev A

6.3

6. DISASSEMBLY AND ASSEMBLY

Removing the Top Casing 1. Reverse the instrument and remove the three M3 pan head screws.

M3 pan head screw

CAUTION When opening the top casing, be sure not to let the top casing fall off. Otherwise, the film cable which connects the top casing and ECG control board and the film cable connector may be damaged. If the film cable is damaged, you must replace it with a new top casing assy.

2. Open the top casing in the direction of the arrow shown below. 3. Release the lock of the film cable connector with the small flat blade driver and your finger as shown in the expanded illustration and remove the film cable.

Film cable connector

Film cable

Top casing

6.4

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

Removing the LCD Assy

NOTE This procedure is used for the ECG-9020K only.

1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the four M3 pan head screws with spring washers which are marked with circles shown below. 3. Disconnect the LCD assy cable from the ECG control board. 4. Lift up the LCD assy so that the LCD assy flat cable is perpendicular to the ECG control board and pull out the LCD assy film cable from the connector on the ECG control board to remove it.

LCD assy cable connector

M3 pan head screw with spring washer

LCD assy film cable

Service Manual ECG-9010/9020 Rev A

6.5

6. DISASSEMBLY AND ASSEMBLY

Removing the Thermal Head Assy

CAUTION Do not touch the surface of the thermal head with your bare hands. This can cause some dots of the thermal head to malfunction. If you touch the surface of the thermal head, clean it with the provided thermal head cleaner pen or cotton moistened with alcohol.

1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Disconnect the thermal head assy connector from the thermal head assy. 4. Push the thermal head bracket fixed rib in the direction of the arrow shown below and lift off the thermal head bracket from the thermal head bracket fixed rib. If the thermal head bracket is not removed completely, push the other side of the thermal head bracket fixed rib the same as above and completely lift off the thermal head bracket.

M3 pan head screw with spring washer

Thermal head bracket

Thermal head spring Thermal head assy Thermal head assy connector

Thermal head spacer

Thermal head bracket fixed rib

Mark sensor BD earth plate spring Thermal head spring hook

6.6

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY 5. Remove the thermal head springs from the thermal head spring hooks. 6. Remove the three M3 pan head screws with spring washers.

CAUTIONS WHEN REPLACING •

Replace the thermal head bracket so that the mark sensor BD earth plate spring is not damaged.

•

Hook the thermal head springs to the thermal head spring hooks after replacing the thermal head bracket.

Service Manual ECG-9010/9020 Rev A

6.7

6. DISASSEMBLY AND ASSEMBLY

Removing the Motor Assy 1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the thermal head bracket as described in the “Removing the Thermal Head Assy ” section. 4. Remove the two M3 pan head screws holding the motor assy to the bottom casing. 5. Disconnect the motor assy connector from the ECG control board. 6. Remove the bundle of leads which connects the mark sensor board and ECG control board from the lead hook. 7. Remove the M2 pan head screw with spring washer holding the mark sensor BD earth plate to the bottom casing.

NOTE The motor assy does not contain the motor sensor BD earth plate. To order the motor sensor BD earth plate, refer to “General Parts List” in Section 8. 8. Lift off the motor sensor board with the motor sensor BD earth plate.

M2 pan head screw Mark sensor BD

with spring washer

earth plate Mark sensor board M3 pan head screw with spring washer

Motor assy connector

Lead hook

6.8

ECG control board

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

Removing the Speaker Assy 1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Disconnect the speaker assy connector from the ECG control board.

ECG control board

Speaker

Speaker assy connector

Service Manual ECG-9010/9020 Rev A

6.9

6. DISASSEMBLY AND ASSEMBLY

Removing the Inverter Board

WARNING The inverter board has a high voltage circuit for the LCD backlight. This can cause shock up to 10 minutes after the power is turned off. After the power is turned off, wait 10 minutes before disassembling the instrument.

NOTE This procedure is used for the ECG-9020K only.

1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the M2 pan head screw holding the inverter board to the ECG control board. 4. Remove the bundle of leads which connects the inverter board and ECG control board from the mini clamp on the power unit. 5. Disconnect the inverter board connector from the ECG control board. 6. Lift off the inverter board from the ECG control board.

Inverter board connector Inverter board

ECG control board

6.10

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

Removing the ECG Control Board

CAUTION Local language text is stored in the flash memory on the ECG control board. When the ECG control board is replaced, local language text is not available; only English text is available. To use the ECG with your own language after the ECG control board is replaced, you must reload the local language files to the ECG. Refer to the YZ-012H6 Translator Support Tool operator’s manual.

1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the inverter board as described in the “Removing the Inverter Board ” section. This step is for the ECG-9020K only. 4. Remove the three M3 pan head screws with spring washers. 5. Remove the two spacer bolts 1. 6. Disconnect the thermal array assy connector from the ECG control board. 7. Lift off the ECG control board from the power board. The CNJ035 connector on the ECG control board is directly connected to its socket on the power board.

Spacer bolt 1

ECG control board

Service Manual ECG-9010/9020 Rev A

Thermal array assy connector

6.11

6. DISASSEMBLY AND ASSEMBLY

Removing the Power Unit 1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the inverter board as described in the “Removing the Inverter Board” section. This step is for the ECG-9020K only. 4. Remove the ECG control board as described in the “Removing the ECG Control Board” section. 5. Remove the ground terminal assy. 6. Remove the two M3 pan head screws with spring washers holding the power unit to the bottom casing.

CAUTION Be sure to use the correct length spacer bolt when replacing the power unit. The two types of spacer bolts which are used in the power unit are almost the same length.

7. Remove the three spacer bolts holding the power unit to the bottom casing.

M3 pan head screw with spring washer

Spacer bolt 2 (shorter)

Spacer bolt 3 (longer) Thermistor wire Thermistor

Battery cover plate 6.12

Ground terminal assy Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

8. Disconnect the battery terminal assy connector from the power unit. 9. Remove the ferrite tape holding the thermistor wire to the battery compartment. 10.Remove the battery cover plate.

CAUTION Do not completely lift off the power unit from the bottom casing before removing the thermistor. Otherwise, the thermistor wire will break.

11.Slightly lift up the power unit and pull out the thermistor from under the rechargeable battery. 12.After pulling out the thermistor, lift off the power unit from the bottom casing.

Thermistor wire Thermistor Ferrite tape

Thermistor seal

Service Manual ECG-9010/9020 Rev A

6.13

6. DISASSEMBLY AND ASSEMBLY

Replacing the Thermistor and Thermistor Cable

CAUTION Observe the following when replacing the thermistor:

• The thermistor wire must go under the thermistor seal as shown below. Positioning the thermistor wire over the thermistor seal results in incorrect temperature measurement or a damaged thermistor.

• To prevent incorrect temperature measurement, the thermistor must be positioned so that only the tip is just past the edge of the thermistor seal, as shown below.

1. Replace the thermistor so that is in the correct position, as shown below.

CAUTION The thermistor cable must be attached to the side of the battery compartment with the ferrite tape so that the thermistor cable is not put on the battery cover plate. This will cause the thermistor cable to be damaged.

2. Attach the thermistor cable to the side of the battery compartment with the ferrite tape as shown previously.

< Side view > Thermistor seal

Thermistor wire

6.14

Battery compartment

Thermistor tip

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

Removing the Battery Terminal Assy 1. Remove the top casing as described in the “Removing the Top Casing ” secion. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the inverter board as described in the “Removing the Inverter Board ” section. This step is for the ECG-9020K only. 4. Remove the ECG control board as described in the “Removing the ECG Control Board” section. 5. Remove the Motor assy as described in the “Removing the Motor Assy ” section. 6. Remove the battery cover plate. This plate is attached to the bottom casing by the five hooks on the bottom casing. 7. Remove the battery terminal assy cable from the cable hooks on the bottom casing. 8. Remove the M3 flat screw and M3 nut.

Battery cover plate Battery terminal assy cable

M3 nut

Hook

M3 flat screw

Service Manual ECG-9010/9020 Rev A

6.15

6. DISASSEMBLY AND ASSEMBLY

Removing the Magazine Assy Removal Put the tip of the small flat-blade driver in the space between the E-ring and magazine chassis then push the E-ring in the direction of the smaller arrow shown below and pull off the magazine assy in the direction of the bigger arrow shown below.

E-ring

Magazine shaft

Replacement Put the plastic magazine shaft into the attachment hole and put the metal magazine shaft with the E-ring and spring into the attachment hole while pressing and holding down the shaft in the direction of the smaller arrow above.

6.16

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

Removing the Bottom Casing NOTE The instrument label is not attached to the bottom of the provided new bottom casing. If you want to attach the instrument label to the new bottom casing, send the damaged bottom casing, and we will provide the same instrument label at our price. 1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the inverter board as described in the “Removing the Inverter Board ” section. This step is for the ECG-9020K only. 4. Remove the ECG control board as described in the “Removing the ECG Control Board” section. 5. Remove the Motor assy as described in the “Removing the Motor Assy ” section. 6. Remove the power unit as described inthe “Removing the Power Unit” section. 7. Remove the battery terminal assy as described in the “Removing the Battery Terminal Assy ” section. 8. Remove the magazine assy as described in the “Removing the Magazine Assy ” section.

Service Manual ECG-9010/9020 Rev A

6.17

6. DISASSEMBLY AND ASSEMBLY

Replacing the Fuse on the Power Board NOTE A blown fuse indicates that there may be a faulty circuit in the instrument. Always check the instrument for the cause of the blown fuse before replacing the fuse. The illustration below shows the location of four fuses inside the instrument. Three fuses are the same. Use the correct fuse only. The fuse rating is shown on the fuse holder. 1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the inverter board as described in the “Removing the Inverter Board” section. This step is for the ECG-9020K only. 4. Remove the ECG control board as described in the “Removing the ECG Control Board” section. 5. Remove the power unit as described in the “Removing the Power Unit” section. 6. Remove the blown fuse from the fuse bracket with the small flat-blade screwdriver.

Symbol

NK Code No.

Description

323241

218008, 8A

322893

218002, 2A

2 1

6.18

Service Manual ECG-9010/9020 Rev A

6. DISASSEMBLY AND ASSEMBLY

Replacing the Lithium Battery on the ECG Control Board The lithium battery is used for backing up the system setup setting.

NOTE Replace the lithium battery when the No. 08 or 09 system error message appears or after the lithium battery is used for approx. 7 years. 1. Remove the top casing as described in the “Removing the Top Casing ” section. 2. Remove the LCD assy as described in the “Removing the LCD Assy ” section. This step is for the ECG-9020K only. 3. Remove the LCD inverter board as described in the “Removing the LCD Inverter Board” section. This step is for the ECG-9020K only. 4. Remove the ECG control board as described in the “Removing the ECG Control Board” section. 5. Remove the expired lithium battery with a soldering iron and a pair of tweezers.

CAUTION Be careful of the polarity of the lithium battery when soldering it. Incorrect attachment of the lithium battery causes the instrument to malfunction.

6. Solder a new lithium battery to the ECG control board.

ECG control board

Service Manual ECG-9010/9020 Rev A

Lithium battery

6.19

Section 7

Replaceable Parts List

General Parts List ……………………………………………………………………………………………….. 7.2 Top Casing Assy …………………………………………………………………………………………………. 7.4 Top Casing Assy, RK-0007 for ECG-9010K ……………………………………………………. 7.4 Top Casing Assy, RK-0009 for ECG-9020K ……………………………………………………. 7.5 Thermal Head Assy, YZ-011H8 ……………………………………………………………………………… 7.6 Motor Assy, GC-0011 …………………………………………………………………………………………… 7.7 Speaker Assy, RK-0005 ……………………………………………………………………………………….. 7.8 Magazine Assy, RH-0001 …………………………………………………………………………………….. 7.9 Battery Terminal Assy, RK-0006 ………………………………………………………………………….. 7.10 LCD Assy, VL-0001 ……………………………………………………………………………………………. 7.11 Cart and Fixing Plate …………………………………………………………………………………………. 7.12 Patient Cable Hanger …………………………………………………………………………………………. 7.14

Service Manual ECG-9010/9020 Rev A

7C.1

7. REPLACEABLE PARTS LIST When ordering parts or accessories from your nearest Nihon Kohden Corporation distributor, please quote the NK code number and part name which are listed in this service manual, and the name or model of the unit in which the required part is located. This will help us to promptly attend to your needs. Always use Nihon Kohden parts and accessories to assure maximum performance from your instrument.

Service Manual ECG-9010/9020 Rev A

7.1

7. REPLACEABLE PARTS LIST

General Parts List Index

NK Code No.

101

RK-0009

ECG-9020K top casing Assy

ECG-9020K 上部ケース Assy

101A

RK-0007

ECG-9010K top casing Assy

ECG-9010K 上部ケース Assy

201

VL-0001

LCD Assy

205

1124-037173

High voltage label

コウアツラベル (BS)

206

543984

Inverter board

CXA-K0505-VJL インバータ BD

207

6114-088371A

Shield sheet 1

インバータゼツエンシート

208

UT-2357

Flash ROM board

FLASH ROM BD

209

6113-028492B

Flash ROM board guide

Flash ROM BD ガイド

210

6113-028741B

Shield plate

ニュウリョクブシールドバン

211

6114-088335

Spacer bolt 1

LCD シチュウ

212

UT-23561

ECG control board

ECG CONTROL BD

213

6113-030453A

Shield sheet 2

ECG CONT シールドシート

301

6114-073378A

Ground lug

アースラグ

302

515284

Bearing B-F3-27

ベアリング B-F3-27

303

2229-000673

Power unit ground name plate

SC-612E アースメイバン

304

6112-010405A

Thermal head bracket

サーマルヘッドオサエ

305

6114-088291A

Thermal head spring

サーマルヘッドバネ

306

YZ-011H8

Thermal head Assy

307

6114-088308A

Mark sensor BD earth plate

サーマルヘッド Assy ペーパ BD アースバン

308

GC-0011

Motor Assy

モータ Assy

309

6114-096077

Thermal head assy

ヘッドスペーサ

310

6111-004405A

Recorder plate

レコーダキバン

311

RH-0001

Magazine Assy

マガジン Assy

312

6114-096086

Connector spacer

コネクタスペーサ

313

6114-097085

Thermal head bracket collar

サーマルヘッドオサエカラー

401

SC-903D

Power unit

電源ユニット

402

6114-087764A

Flash ROM board cover

Flash ROM BD フタ

404

6114-088326A

Spacer bolt 2

Flash ROM BD シチュウ

405

6114-088317A

Spacer bolt 3

BD カンシチュウ

412

547507

Mini clamp TMC-6

横型ミニクランプ TMC-6

501

RK-0006

Battery terminal Assy

バッテリ端子 Assy

502

6114-088398A

Thermistor seal

サーミスタシール

503

6114-087862A

Release lever

カイジョレバー

505

6111-004388A

Bottom casing

カブホンタイ

506

6144-005993A

Ground terminal Assy

アースタンシ Assy

507

6113-028483A

Battery case cover

BATT フタ

508

6114-094293

Battery case rubber

BATT ラバ

509

6114-088424A

Suction paper

キュウスイシ

510

547516

Rubber foot TM-166-12

バンポン TM-166-12

511

6114-088406A

Battery cover plate

BATT カバ

512

RK-0005

Speaker Assy

スピーカ Assy

7.2

Qty

Description

Service Manual ECG-9010/9020 Rev A

7. REPLACEABLE PARTS LIST

Service Manual ECG-9010/9020 Rev A

7.3

7. REPLACEABLE PARTS LIST

Top Casing Assy Top Casing Assy, RK-0007 for ECG-9010K Index

NK Code No.

Qty

Description

6114-087853A

Release button

解除ボタン

547525

Ultra spring C105

ULTRA SPRING C105 ( 圧縮コイルバネ )

6143-008671

Operation panel Assy

9010K 操作パネル Assy for ECG-9010K

6123-010278B

Top casing for ECG-9010K

XM 上部本体シルク図

6114-092731A

Membrane EMI spring

メンブレイン EMI バネ

541914

Ferrite core FPC-24-12-3

フェライトコア FPC-24-12-3

6114-092749A

Ferrite tape

フェライトテープ

7.4

Service Manual ECG-9010/9020 Rev A

7. REPLACEABLE PARTS LIST

Top Casing Assy, RK-0009 for ECG-9020K Index

NK Code No.

Qty

Description

6114-087853A

Release button

解除ボタン

547525

Ultra spring C105

ULTRA SPRING C105 ( 圧縮コイルバネ )

6143-008234B

Operation panel Assy

9020K 操作パネル Assy

for ECG-9020K 4

6123-010153A

Top casing for ECG-9020K

上部本体シルク図

6114-092731A

Membrane EMI spring

メンブレイン EMI バネ

6114-088362A

LCD filter

LCD フィルタ

541914

Ferrite core FPC-24-12-3

フェライトコア FPC-24-12-3

6114-092749A

Ferrite tape

フェライトテープ

Service Manual ECG-9010/9020 Rev A

7.5

7. REPLACEABLE PARTS LIST

Thermal Head Assy, YZ-011H8 Index

NK Code No.

541816

6114-088389A

Qty

Description

Thermal head

サーマルヘッド

KPT-104-8MGF1-NKC

Shield sheet 3

ジョデンシート

2 1

7.6

Service Manual ECG-9010/9020 Rev A

7. REPLACEABLE PARTS PARTS LIST

Motor Assy, GC-0011 Index

NK Code No.

Qty

Description

61 13 — 02 85 36 A

Gear bracket

ギヤ取り付け板

6114-087906A

Gear 2

ギヤ 2

1 06 99 3

E-ring E-24

E リング E-24

6114-087898A

Gear 1

ギヤ 1

6114-087915A

Gear 3

ギヤ 3

3 5 51 0 8

Hexagon socket screw M2×4

六角穴付き止めネジ M2×4

61 14 — 08 78 89 C

Motor gear

モータギア

6114-088282A

Motor bracket

モータ取り付け板

34 39 75

Motor DN35-7306NIB

モータ DN35-7306NIB

544002A

ZHR-12 motor cable (L120, 65)

ZHR-12 カタタン L=120 L=65

61 90 — 00 58 44

Motor sensor board

38 76 26

Photo-interrupter GP1A53HR

フォトインタラプ GP1A53HR

24 84 38

Ceramic capacitor

セラミックコンデンサ

K104Z20Z5UF53H5

61 90 — 01 65 83

Mark sensor board

54 18 34

Photo-reflector

フォトリフレクタ

NJL5801K-F1

2 3 4 5 6 7 8 14 15 9 12

13 11

Ser vice Manual ECG-9010/9020 Rev A

7.7

7. REPLACEABLE REPLACEABL E PARTS LIST

Speaker Assy, RK-0005 Index

NK Code No.

0 4 2 4- 0 0 7 6 5 4

7.8

Qty 1

Description RK-0005

Ser vice Manual ECG-9010/9020 Rev A

7. REPLACEABLE PARTS PARTS LIST

Magazine Assy, RH-0001 Index

NK Code No.

Qty

Description

1 07 00 2

E-ring E-32

E リング E-32

61 14 — 08 84 15 A

Paper roller spacer

軸スぺーサ

61 12 — 01 03 97 A

Paper Magazine

マガジン

61 14 — 08 83 53 A

Paper magazine shaft

マガジン固定軸

54 753 4

Ultra spring C147

ULTRA SPRING C147 ( 圧縮コイルバネ )

61 14 — 08 78 71 A

Paper roller gear

プラテンギヤ

61 13 — 02 85 27 A

Paper roller 14 (110)

プラテンローラ 14(110)

6114-023887A

Brush

ブラシ

1 2

3 4

1 5

2 6

Ser vice Manual ECG-9010/9020 Rev A

7.9

7. REPLACEABLE PARTS LIST

Battery Terminal Assy, RK-0006 Index

NK Code No.

Qty

Description

544011A

EHR-4 battery terminal cable (L150) EHR-4 カタタン L=150

2113-013175B

Battery bracket

バッテリ端子台

2114-040865A

Battery terminal

バッテリ端子

299784

Battery cable tube

スミチューブ

3 4

7.10

Service Manual ECG-9010/9020 Rev A

7. REPLACEABLE PARTS LIST

LCD Assy, VL-0001 Index

NK Code No.

Qty

Description

545946

LCD module

LCD module LM32019T

541914

Ferrite

フェライト FPC-24-12-3

6114-092749A

Ferrite tape

フェライトテープ

6114-088344B

LCD holder

LCD カナグ

6144-092758A

LCD shield sheet

LCD シールドシート

2 3 4

Service Manual ECG-9010/9020 Rev A

7.11

7. REPLACEABLE PARTS LIST

Cart and Fixing Plate Index

NK Code No.

Qty

Description

101

B-8471

Top plate 2

上台 2 (103E)

102

B-8476

Top plate 1

上台 1 (103E)

103

B-9335

Patient cable hanger holder

コードハンガー受け具 (103E)

104

B-9142

Lock plate (left)

ロック板（左）

105

2114-04323

Cart spacer

ECG カートスペーサ

106

———

Cart knob

GA 型つまみ GA-35

107

B-9144

Lock spring (left)

ロックバネ（左）

108

B-9145

Lock spring

ロックバネ（右）

109

B-8056A

Cord hanger

コード巻き具

110

B-9143

Lock plate (right)

ロック板（右）

111

B-9147

Lock screw

ロック軸

112

2851-200119

Pan head screw M6×40

クロスアナ小ネジ M6×40

113

2114-053414

Cart wing screw

ECG カート固定ネジ

201

B-8475

Bottom plate

中台 2 (103E)

202

B-8051

Connection bar 1

連結棒 1

203

B-7196

Pipe 2 (right)

パイプ 2 左

204

B-7197

Pipe 2 (left)

パイプ 2 右

205

B-8450

Side bar 1

206

———

Side bar bolt M12×25

サイドバー 1 Bolt M12×25

207

———

Caster

キャスタ

208

B-8053

Basket connection bar

カゴ連結棒

209

B-8441

Basket

カゴ

210

B-8052

Connection bar 2

ロック板（右）

211

B-7195

Pipe 1

パイプ 1

212

B-8451

Side bar 2

サイドバー 2

213

———

M12 spring washer

M12 スプリングワッシャー

214

———

Caster with stopper

キャスタ（ストッパ付き）

6113-031996

Fixing plate

9010 固定プレート

291818

Wing nut

ウイングナット

NOTE * Parts A and B parts comprise the fixing plate, DI-106D.

7.12

Service Manual ECG-9010/9020 Rev A

7. REPLACEABLE PARTS LIST

104

103 101

111 105

106

112

107 108 110

102

111 113 109 B

203 202

201 b

209 210

204

112

205 211 206 213 208 207

212

213 214

Service Manual ECG-9010/9020 Rev A

7.13

7. REPLACEABLE PARTS LIST

Patient Cable Hanger Index

NK Code No.

Qty

Description

6124-202372

CH panel N*

分岐部表パネル N

6112-00 6045

CH cover N*

分岐部カバー N

2219-013205

CH cover screw*

化粧ネジ

2219-013214

CH knob spacer

分岐部スペーサ

2114-038707A

CH arm screw

アームネジ

6113-016941

CH base plate N

分岐部取付板 2N

6113-016879A

CH joint DN

ジョイント DN

6113-016888

CH pipe 3N

パイプ .3N

398855

Taping screw M3×8

タッピングネジ M3×8

6113-016905

CH pipe cover. 1N

パイプカバ .1N

2114-038814B

CH joint spacer

ジョンイントスペーサ

6113-016923

CH knob not. 3N

ノブナット .3N

6114-052392

CH joint AN

ジョイント .AN

2114-038672B

CH top arm screw

アームバネ上

2219-011858

CH spring axle. 3

バネ軸 .3

6114-052409

CH joint BN

ジョイント .BN

289768

CH hexagon socket bolt M4×50

6 角穴付ボルト M4×50

6113-016897

CH pipe. 4N

パイプ .4N

6113-016914

CH pipe cover. 2N

パイプカバ .2N

2114-038681B

CH bottom arm screw

アームバネ下

6114-052427

CH joint CN

6113-016932

CH knob nut. 4N

ジョイント .CN ノブナット .4N

6113-011901

CH input box connector

取付板

6114-035999

CH guide pin

ガイドピン

283702

ISO flat-head screw(M3×6)

ISO 皿ネジ M3×6

6114-036008

Bracket spring

押さえ板バネ

NOTE The parts marked with * are replaced by parts A, B and C when the Input Box is used.

7.14

Service Manual ECG-9010/9020 Rev A

7. REPLACEABLE PARTS LIST

Service Manual ECG-9010/9020 Rev A

7.15

Section 8

Connector Pin Assignment

Power Unit ………………………………………………………………………………………………………….. 8.1 CN11 (to AC Inlet) ……………………………………………………………………………………… 8.1 CN21 (to ECG control board) ………………………………………………………………………. 8.1 CN31 (to Thermal Head) …………………………………………………………………………….. 8.1 CN51 (to Battery)……………………………………………………………………………………….. 8.1 ECG Control Board ……………………………………………………………………………………………… 8.2 CNJ011 (to Thermal Head) ………………………………………………………………………….. 8.2 CNJ012 (to Inverter Board)………………………………………………………………………….. 8.2 CNJ013 (to LCD) ……………………………………………………………………………………….. 8.3 CNJ021 (to Flash ROM Board)…………………………………………………………………….. 8.3 CNJ031 (to SIO Connector)…………………………………………………………………………. 8.5 CNJ032 (to Key Connector) …………………………………………………………………………. 8.5 CNJ033 (to Speaker) ………………………………………………………………………………….. 8.6 CNJ035 (to Power Unit) ………………………………………………………………………………. 8.7 CNJ036 (to Motor) ……………………………………………………………………………………… 8.8 CNJ041 (to CRO Connector) ……………………………………………………………………….. 8.8 CNJ043 (to EXT INPUT Connector) ……………………………………………………………… 8.8 CNJ091 (to ECG Connector) ……………………………………………………………………….. 8.9 Flash ROM Board ……………………………………………………………………………………………… 8.10 CNJ021 (to ECG Control Board) ………………………………………………………………… 8.10 Inverter Board …………………………………………………………………………………………………… 8.12 CN1 (to ECG Control Borad) ……………………………………………………………………… 8.12 CN2 (to LCD module) ……………………………………………………………………………….. 8.12 External Input/Output Socket ………………………………………………………………………………. 8.13 SIO Socket ………………………………………………………………………………………………. 8.13 EXT Input and CRO Output ……………………………………………………………………….. 8.13

Service Manual ECG-9010/9020 Rev A

8C.1

8. CONNECTOR PIN ASSIGNMENT

Power Unit CN11 (to AC Inlet) Pin No.

Signal name

Description

AC power

DGND

Ground

AC power

CN21 (to ECG control board) Pin No.

Signal name

Description

Pin No.

Signal name

DGND

Ground for logic circuit

PWROVER

DGND

Ground for logic circuit

SPOFF

DGND

Ground for logic circuit

HEADRST

DGND

Ground for logic circuit

DCXAC

DGND

Ground for logic circuit

OFFKEY

DGND

Ground for logic circuit

CHGLEDA

DGND

Ground for logic circuit

CHGLEDK

DGND

Ground for logic circuit

ACLED

DGND

Ground for logic circuit

POWERSW

DGND

Ground for logic circuit

NF5V

DGND

Ground for logic circuit

NF5V

DGND

Ground for logic circuit

NF5V

DGND

Ground for logic circuit

DCPOWER

DGND

Ground for logic circuit

DCPOWER

DGND

Ground for logic circuit

AGNDSND

Description

CN31 (to Thermal Head) Pin No.

Signal name

Description

Pin No.

Signal name

Description

+24 V

+24 V for thermal head

+24VGND

Ground for thermal head

+24 V

+24 V for thermal head

+24VGND

Ground for thermal head

+24 V

+24 V for thermal head

+24VGND

Ground for thermal head

+24 V

+24 V for thermal head

+24VGND

Ground for thermal head

+24 V

+24 V for thermal head

+24VGND

Ground for thermal head

+24 V

+24 V for thermal head

+24VGND

Ground for thermal head

Pin No.

Signal name

Description

Pin No.

Signal name

Description

BATT+

Battery power (+)

BATT−

Battery power (−)

BATT+

Battery power (+)

BATT−

Battery power (−)

CN51 (to Battery)

Service Manual ECG-9010/9020 Rev A

8.1

8. CONNECTOR PIN ASSIGNMENT

ECG Control Board CNJ011 (to Thermal Head) Model: 63261-1490

Pin No.

Signal name

Direction

Description

THLATCH

Output

Data latch output to thermal head

THDATA

Output

Print data to thermal head

XSTROPE1

Output

Thermal head driver enable output

XSTROPE1

Output

Thermal head driver enable output

XSTROPE1

Output

Thermal head driver enable output

XSTROPE1

Output

Thermal head driver enable output

XSTROPE1

Output

Thermal head driver enable output

XSTROPE1

Output

Thermal head driver enable output

THERM

Input

Thermal head temperature input detected by thermistor

DGND

Ground for digital circuit

+5 V

+5 V for digital circuit

+5 V

+5 V for digital circuit

THSCLK

Output

Data shift output to thermal head Not connected

CNJ012 (to Inverter Board) Model: 53261-0690

Pin No.

Signal name

Direction

Description

VIN

Output

+10.4 to 12 V for backlight

GND

VREMOTE

Output

Backlight On/Off output (0 V: Not light, + 5 V: Light)

VBRIGHT

Output

Backlight brightness control output

Ground

(0 V: when bright is set to maximum)

8.2

XLCD

Not connected Input

LCD identification input

Service Manual ECG-9010/9020 Rev A

8. CONNECTOR PIN ASSIGNMENT

CNJ013 (to LCD) Model: FH3-12S-1.25DSA

Pin No.

Signal name

Direction

Description

Output

Scannning start output

CP1

Output

Input data latch ouput

CP2

Output

Data input clock output

LCDON

Output

Display control output (“L” = OFF)

LCD [0]

Output

Display data output [0]

LCD [1]

Output

Display data output [1]

LCD [2]

Output

Display data output [2]

LCD [3]

Output

Display data output [3]

+5 V

Output

+5 V for logic circuit

DGND

+28 V

Not connected

Ground for digital circuit Output

+17 to 26 V for driving LCD

Direction

Description

CNJ021 (to Flash ROM Board) Model: 87BFN-080R

Pin No.

Signal name

DGND

Ground for digital circuit

DGND

Ground for digital circuit

+5 V

+5 V for logic circuit

XCSRO1

Output

Chip select 1 for ROM (Address: $000000 to $0FFFFF)

XCSRO2

Output

Chip select 2 for ROM (Address: $100000 to $1FFFFF)

SROMC

Output

Serial ROM clock output

SROMR

Output

Serial ROM clock output

LA [00]

Output

Address bus

LA [01]

Output

Address bus

LA [02]

Output

Address bus

LA [03]

Output

Address bus

LA [04]

Output

Address bus

LA [05]

Output

Address bus

LA [06]

Output

Address bus

LA [07]

Output

Address bus

LA [08]

Output

Address bus

LA [09]

Output

Address bus

LA [10]

Output

Address bus

LA [11]

Output

Address bus

LA [12]

Output

Address bus

LA [13]

Output

Address bus

LA [14]

Output

Address bus

LA [15]

Output

Address bus

LA [16]

Output

Address bus

LA [17]

Output

Address bus

LA [18]

Output

Address bus

Service Manual ECG-9010/9020 Rev A

8.3

8. CONNECTOR PIN ASSIGNMENT

8.4

Pin No.

Signal name

Direction

Description

LA [19]

Output

Address bus

LD [08]

Input/Output

Data bus

LD [09]

Input/Output

Data bus

LD [10]

Input/Output

Data bus

LD [11]

Input/Output

Data bus

LD [12]

Input/Output

Data bus

LD [13]

Input/Output

Data bus

LD [14]

Input/Output

Data bus

XRESET

Output

Reset output

XDSACK0

Output

Output for system test

XDSACK1

Output

Output for system test

XOE

Output

Read output

XWE

Output

Write output

XBERR

Output

Output for system test

LA [22]

Output

Address bus

LA [21]

Output

Address bus

SROMD

Input

Serial ROM data

LA [20]

Output

Address bus

LA [23]

Output

Address bus

FC [0]

Out put

Output for system test

FC [1]

Out put

Output for system test

FC [2]

Out put

Output for system test

LA [26]

Output

Address bus

LA [25]

Output

Address bus

LA [24]

Output

Address bus

SIZ0

Output

Output for system test

SIZ1

Output

Output for system test

XAS

Output

Output for system test

RXW

Output

Output for system test

LD [07]

Input/Output

Data bus

LD [06]

Input/Output

Data bus

LD [05]

Input/Output

Data bus

LD [04]

Input/Output

Data bus

LD [03]

Input/Output

Data bus

LD [02]

Input/Output

Data bus

LD [01]

Input/Output

Data bus

LD [00]

Input/Output

Data bus

LD [23]

Input/Output

Data bus

LD [22]

Input/Output

Data bus

LD [21]

Input/Output

Data bus

LD [20]

Input/Output

Data bus

LD [19]

Input/Output

Data bus

LD [18]

Input/Output

Data bus

LD [17]

Input/Output

Data bus

LD [16]

Input/Output

Data bus

LD [27]

Input/Output

Data bus

LD [28]

Input/Output

Data bus

LD [29]

Input/Output

Data bus

Service Manual ECG-9010/9020 Rev A

8. CONNECTOR PIN ASSIGNMENT Pin No.

Signal name

Direction

Description

LD [30]

Input/Output

Data bus

LD [31]

Input/Output

Data bus

LD [15]

Input/Output

Data bus

+5 V

+5 V for logic circuit

DGND

Ground for digital circuit

DGND

Ground for digital circuit

CNJ031 (to SIO Connector) Model: JEY-9S-1A28

Pin No.

Signal name

Direction

Description

TXD

Output

Transmission data

RXD

Input

Receiving data

RTS

Output

Request to send

CTS

Input

Clear to send

DSR

Input

Data set ready

GND

Ground for main unit

Ground for signal Input

With modem = DCD Without modem = Short to 4-pin

DTR

Output

Data terminal ready

CNJ032 (to Key Connector) Model: S2B-ZR

Pin No.

Signal name

Direction

Description

SPKOUT

Output

Speaker output

AGNDSND

Service Manual ECG-9010/9020 Rev A

Ground for speaker

8.5

8. CONNECTOR PIN ASSIGNMENT

CNJ033 (to Speaker) Model: 52559-4092

8.6

Pin No.

Signal name

Direction

Description

+5 V

Output

+5 V for logic circuit

+5 V

Output

+5 V for logic circuit

LED [00]

Output

LED display output

LED [01]

Output

LED display output

LED [02]

Output

LED display output

QRS

Output

QRS display LED output

LED [04]

Output

LED display output

FILTER

Output

Filter display LED output

LED [06]

Output

LED display output

LED [07]

Output

LED display output

LED [08]

Output

LED display output

LED [09]

Output

LED display output

LED [10]

Output

LED display output

LED [11]

Output

LED display output

LED [12]

Output

LED display output

LED [13]

Output

LED display output

LED [14]

Output

LED display output

LED [15]

Output

LED display output

LED [16]

Output

LED display output

LED [03]

Output

LED display output

ONLED

Output

LED display output at power-on

LED [05]

Output

LED display output

ACLED

Output

LED display output for AC power

DGND

CHGLEDK

Output

Charging display LED cathode output

CHGLEDA

Output

Charging display LED anode output

PSW

Input

Power switch

DGND

K00

Input

Keyboatd input

K01

Input

Keyboard input

K02

Input

Keyboard input

K03

Input

Keyboard scan input

KS0

Output

Keyboard scan input

KS1

Output

Keyboard scan input

KS2

Output

Keyboard scan input

Not connected

Ground for digital circuit

Ground for digital circuit.

Service Manual ECG-9010/9020 Rev A

8. CONNECTOR PIN ASSIGNMENT

CNJ035 (to Power Unit) Model: TX24-30P-12ST-H1

Pin No.

Signal name

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

DGND

Ground for logic circuit

PWOVER

Input

Power overheat input

POFF

Output

Power-off output

HDOVER

Input

Thermal head power over-current input

DCXAC

Input

Battery operation status input

OFFKEY

Input

Power-off request input

CHGLEDA

Input

Charging display LED input

CHGLEDK

Input

Charging display LED inut

ACLED

Input

AC power display LED input

PSW

Output

Power ON/OFF switch

+5 V

+5 V for logic circuit

+5 V

+5 V for logic circuit

+5 V

+5 V for logic circuit

+12 V

+12 V for analog circuit

+12 V

+12 V for analog circuit

AGNDSND

Ground for sound circuit

Service Manual ECG-9010/9020 Rev A

Direction

Description

8.7

8. CONNECTOR PIN ASSIGNMENT

CNJ036 (to Motor) Model: B12B-ZR

Pin No.

Signal name

Direction

Description

+5 V

PAEMP

Input

Paper empty snsor input

PAMARK

Input

Mark sensor input

DGND

Output

Paper empty sensor LED output

+5 VR301

Output

Mark sensor LED output

+5 V

DGND

Ground for digital circuit

+5 VR499

LED signal for sensor which detects number of motor

+5 V for paper empty/mark sensor

Ground for paper empty/mark sensor

rotation 10

MOTRET

Detection input of number of motor rotation

MOTPP

Motor power (+)

MOTPM

Motor power (−)

CNJ041 (to CRO Connector) Model: SG8036

Pin No.

Signal name

Direction

Description

CRO

External signal output (0.5 V/10 mm)

AGND

Ground for analog circuit

CNJ043 (to EXT INPUT Connector) Model: SG8036

8.8

Pin No.

Signal name

Direction

Description

EXT-IN

External signal input (10 mm/0.5 V)

AGND

Ground for analog circuit

Service Manual ECG-9010/9020 Rev A

8. CONNECTOR PIN ASSIGNMENT

CNJ091 (to ECG Connector) Model: JAY-15S-1A28

Pin No.

Signal name

Direction

Description

Input

ECG signal input

Input

ECG signal input

Input

ECG signal input

Input

ECG signal input

Iutput

ECG signal input

SHIELD

Cable shield

Not connected

Input

ECG signal input

Input

ECG signal input

Input

ECG signal input

Input

ECG signal input

Service Manual ECG-9010/9020 Rev A

Not connected Input

ECG signal input Not connected

8.9

8. CONNECTOR PIN ASSIGNMENT

Flash ROM Board CNJ021 (to ECG Control Board) Model: 87BMN-080R

8.10

Pin No.

Signal name

Direction

Description

DGND

Ground for digital circuit

DGND

Ground for digital circuit

+5 V

+5 V for logic circuit

XCSRO1

Output

Chip select 1 for ROM (Address: $000000 to $0FFFFF)

XCSRO2

Output

Chip select 2 for ROM (Address: $100000 to $1FFFFF)

SROMC

Output

Serial ROM clock output

SROMR

Output

Serial ROM clock output

LA [00]

Output

Address bus

LA [01]

Output

Address bus

LA [02]

Output

Address bus

LA [03]

Output

Address bus

LA [04]

Output

Address bus

LA [05]

Output

Address bus

LA [06]

Output

Address bus

LA [07]

Output

Address bus

LA [08]

Output

Address bus

LA [09]

Output

Address bus

LA [10]

Output

Address bus

LA [11]

Output

Address bus

LA [12]

Output

Address bus

LA [13]

Output

Address bus

LA [14]

Output

Address bus

LA [15]

Output

Address bus

LA [16]

Output

Address bus

LA [17]

Output

Address bus

LA [18]

Output

Address bus

LA [19]

Output

Address bus

LD [08]

Input/Output

Data bus

LD [09]

Input/Output

Data bus

LD [10]

Input/Output

Data bus

LD [11]

Input/Output

Data bus

LD [12]

Input/Output

Data bus

LD [13]

Input/Output

Data bus

LD [14]

Input/Output

Data bus

XRESET

Output

Reset

XDSACK0

Output

Output for system test

XDSACK1

Output

Output for system test

XOE

Output

Read output

Service Manual ECG-9010/9020 Rev A

8. CONNECTOR PIN ASSIGNMENT Pin No.

Signal name

Direction

Description

XOE

Output

Read output

XWE

Output

Write output

XBERR

Output

Output for system test

LA [22]

Output

Address bus

LA [21]

Output

Address bus

SROMD

Input

Serial ROM data

LA [20]

Output

Address bus

LA [23]

Output

Address bus

FC [0]

Out put

Output for system test

FC [1]

Out put

Output for system test

FC [2]

Out put

Output for system test

LA [26]

Output

Address bus

LA [25]

Output

Address bus

LA [24]

Output

Address bus

SIZ0

Output

Output for system test

SIZ1

Output

Output for system test

XAS

Output

Output for system test

RXW

Output

Output for system test

LD [07]

Input/Output

Data bus

LD [06]

Input/Output

Data bus

LD [05]

Input/Output

Data bus

LD [04]

Input/Output

Data bus

LD [03]

Input/Output

Data bus

LD [02]

Input/Output

Data bus

LD [01]

Input/Output

Data bus

LD [00]

Input/Output

Data bus

LD [23]

Input/Output

Data bus

LD [22]

Input/Output

Data bus

LD [21]

Input/Output

Data bus

LD [20]

Input/Output

Data bus

LD [19]

Input/Output

Data bus

LD [18]

Input/Output

Data bus

LD [17]

Input/Output

Data bus

LD [16]

Input/Output

Data bus

LD [27]

Input/Output

Data bus

LD [28]

Input/Output

Data bus

LD [29]

Input/Output

Data bus

LD [30]

Input/Output

Data bus

LD [31]

Input/Output

Data bus

LD [15]

Input/Output

Data bus

+5 V

+5 V for logic circuit

DGND

Ground for digital circuit

DGND

Ground for digital circuit

Service Manual ECG-9010/9020 Rev A

8.11

8. CONNECTOR PIN ASSIGNMENT

Inverter Board CN1 (to ECG Control Borad) Pin No.

Signal name

Direction

Description

VIN

Output

+10.4 to 12 V for backlight

GND

VREMOTE

Output

Backlight On/Off output (0 V: Not light, +5 V: Light)

VBRIGHT

Output

Backlight brightness control output

Ground

(0 V: when bright is set to maximum) 5

Not connected

XLCD

Input

LCD identification input

Pin No.

Signal name

Direction

Description

Iout

Output

Power for backlight

Ioutreturn

CN2 (to LCD module)

8.12

Not connected Input

Power for backlight

Service Manual ECG-9010/9020 Rev A

8. CONNECTOR PIN ASSIGNMENT

External Input/Output Socket SIO Socket Pin No.

Signal name

Direction

Description

TXD

Output

Transmission data

RXD

Input

Receiving data

RTS

Output

Request to send

CTS

Input

Clear to send

DSR

Input

Data set ready

GND

Ground for main unit

Ground for signal Input

With modem = DCD Without modem = Short to 4-pin

DTR

Output

Data terminal ready

Main Unit Side Connector on ECG Control Board

Connector model: NK code No. JEY-9S-1A2B Mating Connector

Connector: DE-9P (NK Code No. 079362) Case:

DE-C1-J6 (NK Code No. 080788)

EXT Input and CRO Output Main Unit Side Connector on ECG Control Board

Connector model: NK code No. SG8036 Mating Connector

Mini plug: AP-313 (NK Code No. 355456A)

Service Manual ECG-9010/9020 Rev A

8.13

Источник

OOppeerraattoorr TTrraaiinniinngg GGuuiiddeeffoorr

CCaarrddiiooffaaxx EECCGG—99002200KK

FFrroomm NNiihhoonn KKoohhddeenn

ECG Recording for Most Mammalsand

Interpretive ECG Analysisfor Dogs and Cats

Veterinary ECG Software Kit QP-992E

AA nnoottee aabboouutt tthhiiss gguuiiddee:: It is intended to
be used as a brief overview of the instruments operation andto
familiarize you with the basic operations you are likely to
require. It is not intended to replace theaccompanying Operators
Manual. The Operators Manual should be read in its entirety and
referredto for further explanation of the instruments
operation.
QQuuiicckk RReeffeerreennccee IInnddeexx

I. Getting Started — An Instrument Overview 1

II. Keypad Overlay 6

III. System Setup Menu 7

IV. Using System Test Menu for Simulated ECG Recordings 10

a. Exercise One: ECG Analysis on Medium Size Dog 11 — 12

b. Exercise Two: ECG Analysis on a Cat 11 — 13

c. Exercise Three: Rhythm Strip Recording 11 — 14

d. Manually Recording ECG Waveforms 15 — 16

e. Manual Mode — Rhythm Strip Recording 15 — 17

f. Lead II (Rhythm Strip) Surgical Monitoring 15 — 18

V. Attaching Electrodes and Performing an ECG Recording 19

VI. Troubleshooting 22

VII. Reference Articles 24
1GGEETTTTIINNGG SSTTAARRTTEEDD Install Battery Charge Battery —
(an installed, charged battery is required for AC Power Operation)
Install Printer Paper

AC Operation and Battery Operation

AACC PPoowweerr OOppeerraattiioonn::When AC power is supplied,
the cardiograph operates on AC power and the ACpower lamp is
lit.

CCAAUUTTIIOONNAAllwwaayyss iinnssttaallll tthhee bbaatttteerryy
wwhheenn tthhee ccaarrddiiooggrraapphh ooppeerraatteess oonn AACC
ppoowweerr.. OOtthheerrwwiissee

ssuuddddeenn ppoowweerr ddoowwnn ooccccuurrss wwhheenn aann
eelleeccttrrooddee iiss ddeettaacchheedd dduurriinngg
rreeccoorrddiinngg..

BBaatttteerryy PPoowweerr OOppeerraattiioonn::When AC power is
not supplied, the cardiograph automatically switches to to bat-tery
power operation and the battery operation lamp is lit to indicate
the reminingbattery power.The cardiograph can operate at least 60
minutes with a new fullycharged battery.

NNOOTTEE WWhheenn tthhee bbaatttteerryy iiss aallmmoosstt
ddiisscchhaarrggeedd aanndd tthhee ppoowweerr iiss ttuurrnneedd
oonn,, tthhee CChhaarrggee BBaatttteerryy mmeessssaaggee
aappppeeaarrss,, tthhee bbaatttteerryy ooppeerraattiioonn llaammpp
bblliinnkkss iinn oorraannggee,, aann aallaarrmm ssoouunnddss
aanndd tthhee ccaarrddiiooggrraapphh iimmmmeeddiiaatteellyy
ttuurrnnss tthhee ppoowweerr ooffff..

AAuuttoommaattiicc PPoowweerr OOffffOn battery operation, to
prevent unwanted battery consumption in battery operation,the
cardiograph automatically turns the power off when the Fail message
(no electrode is attached to the animal) is displayed on the screen
and there is no keyoperation for approximately three minutes. In
this case, temporarily changed settingsare lost. If this happens,
turn the power back on to use the cardiograph continuously.In AC
operation, the backlight turns off.To light the backlight, press
any key.

BBaatttteerryy OOppeerraattiioonn TTiimmee

NNOOTTEERReemmaaiinniinngg bbaatttteerryy ppoowweerr
cchhaannggeess ddeeppeennddiinngg oonn tthhee
ssuurrrroouunnddiinngg

tteemmppeerraattuurree aanndd qquuaalliittyy ooff
rreeccoorrddiinngg wwaavveeffoorrmm..

BBaatttteerryy OOppeerraattiioonn LLaammpp AAvvaaiillaabbllee
RReeccoorrddiinngg TTiimmeeLit in GREEN Approximately 60 minutesLit
in GREEN and ORANGE Approximately 40 minutesLit in ORANGE
Approximately 20 minutesBlinking in ORANGE Power will be lost in
approximately one minute.

Recharge the battery immediately or operate on AC power.

AC power lamp on

Battery operation lamp on
2IINNSSTTRRUUMMEENNTT OOVVEERRVVIIEEWW

TToopp VViieeww

NNAAMMEE FFUUNNCCTTIIOONN1. Operation Panel Refer to the next
page.2. Magazine (recording paper container) Contains the recording
paper.3. Magazine Release Button Press this button to open the
magazine

when loading the recording paper.4. LCD Screen Displays ECG
waveforms, animal information,

marks and messages.

OOppeerraattiioonn PPaanneell

NNAAMMEE FFUUNNCCTTIIOONN5. Battery Charge Lamp Indicates the
battery charge status

LIT — The battery is being chargedBLINKING — The battery is
almost fully chargedOFF — The battery is fully
chargedNNOOTTEEAAfftteerr cchhaarrggiinngg iiss ccoommpplleettee,,
tthhee bbaatttteerryy cchhaarrggee llaammpp wwiillll bblliinnkk..
TThhiiss iiss bbeeccaauussee aa ssmmaallll ccuurrrreennttiiss
ssuupppplliieedd ttoo tthhee bbaatttteerryy
((ssuupppplleemmeennttaarryy rreecchhaarrggiinngg)) iinn oorrddeerr
ttoo pprreevveenntt sseellff—ddiisscchhaarrggiinnggooff tthhee
bbaatttteerryy.. KKeeeepp tthhee ppoowweerr ccoorrdd pplluuggggeedd
iinnttoo tthhee AACC oouuttlleett..

6. Battery Operation Lamp During battery operation, indicates
the remaining battery power with the color and lighting state.
Blinking in orange indicates the battery is almost discharged.

Panel Descriptions
37. AC Power Lamp Lit when AC power is supplied.

8. POWER Key/Lamp Turns the cardiograph on/off.

The cardiograph is turned on.

The cardiograph is turned off.

9. MODE Key Calls up the Main Menu screen.

10. RHYTHM Key/Lamp Starts the rhythm recording in ECG
examination.The lamp is lit while waveforms are acquired and
recorded.

11. FEED/MARK Key Paper Feeding:Paper with a paper mark (black
rectangle) at the bottom of the paper: Feeds the paper until the
paper mark is detected.Paper without the mark:Feeds the paper
continuously while this key is pressed.Event Mark:In the manual
recording mode, you can annotate the ECG waveform by pressing this
key. An event mark is recorded.

12. FILTER Key/Lamp Turns the EMG filter on/off.The lamp is lit
when the EMG filter is turned on.NOTE:The EMG filter reduces the
amplitude of high frequency components which may distort the
waveform. Automatic ECG analysis is performed on this possibly
distorted waveform.

Refer to section 11 ECAPS 12V ANI-MAL ECG INTERPRETATION
PROGRAM.

13. COPY/CAL Key/Lamp Automatic recording mode and rhythm
recording mode:Prints any number of copies of the recording
results. When copy is available and during printing, the lamp is
lit.Manual Recording Mode:Records the calibration waveforms. For
external input signals, this key is not operative.

14. START/STOP Key/Lamp Starts or stops recording. During
recording, thelamp is lit.

15. POSITION Key/Lamp Selects animal position during
examination.Right L (Lying on right side), Sitting, Steral (lying
flat on stomach with front paws forward),Standing.
416. F1, F2, F3 Function Keys Correspond to the functions
displayed at the bottom of the screen.

17. AGE/SEX Key Selects the animal age zone and sex.

18. CLASSIFICATION Key Selects the animal classification. Large
(Dog),Medium (Dog), Small (Dog), Mini (Dog), and Cat.

RRIIGGHHTT SSIIDDEE PPAANNEELL

CCAAUUTTIIOONN

WWhheenn ccoonnnneeccttiinngg tthhee eexxtteerrnnaall
iinnssttrruummeenntt ttoo tthhee ccoonnnneeccttoorrss mmaarrkkeedd
wwiitthh U,, eennssuurree tthhee eexxtteerrnnaall
iinnssttrruummeenntt ccoommpplliieess wwiitthh tthhee
IIEECC6600660011—11 ssaaffeettyy ssttaannddaarrdd ffoorr
mmeeddiiccaall eeqquuiippmmeenntt oorr CCIISSPPRR 1111
SSeeccoonnddEEddiittiioonn 11999900—0099,, GGrroouupp 11 aanndd
CCllaassss BB SSttaannddaarrdd.. WWhheenn eexxtteerrnnaall
iinnssttrruummeenntt ddooeess nnoott ccoommppllyy
wwiitthheeiitthheerr ooff tthheessee ssttaannddaarrddss,, uussee aa
llooccaallllyy aavvaaiillaabbllee mmeeddiiccaall uussee
iissoollaattiioonn ttrraannssffoorrmmeerr uunniitt bbeettwweeeenn
tthheeeexxtteerrnnaall iinnssttrruummeenntt aanndd tthhee AACC
oouuttlleett.. DDoo nnoott uussee tthhee oouuttppuutt ssiiggnnaall
ffrroomm tthhee oouuttppuutt ccoonnnneeccttoorr ffoorr aa
ssyynncchhrroonniizzaattiioonn ssiiggnnaall ssuucchh aass tthhee
ssyynncchhrroonniizzeedd ccaarrddiioovveerrssiioonn ssiiggnnaall..
TThheerree iiss aa ttiimmee ddeellaayy bbeettwweeeenn tthhee
iinnppuutt EECCGG ssiiggnnaall aanndd tthhee oouuttppuutt
ssiiggnnaall..

NNaammee FFuunnccttiioonn

19. Patient input connector Connects the patient cable.

20. EXT-IN Connector Inputs an analog signal from an external
instrument.

21. CRO-OUT Outputs the rhythm lead (lead II) to an external
instrument.

22. SIO Connector Connects to other cardiographs and personal
computer for RS-232C digital communication.

23. AC Power Cord Socket Connects the power cord to supply AC
power to the cardiograph.

24. Battery Compartment Contains the battery.

CCAAUUTTIIOONNAAllwwaayyss iinnssttaallll tthhee bbaatttteerryy
wwhheenn tthhee ccaarrddiiooggrraapphh ooppeerraatteess oonn AACC
ppoowweerr.. OOtthheerrwwiissee ssuuddddeenn ppoowweerr
ddoowwnnooccccuurrss wwhheenn aann eelleeccttrrooddee iiss
ddeettaacchheedd dduurriinngg rreeccoorrddiinngg..

25. Equipotential Ground Terminal When the equipotential
grounding is required to ensure electrical safety, connect this
terminal to the equipotential ground terminal with the ground
lead.

!
5EEXXPPLLAANNAATTIIOONN OOFF TTHHEE EECCGG SSCCRREEEENN

1. Selected mode in the Main Menu screen.

2. Animal information display areaAnimal age zone/sex,
classification and examination position are displayed. For the
default settings, refer to section 3 Changing settings before
measurement.

3. Heart RateUpdated every two seconds.

4. QRS Sync MarkBlinks in synchronization with the QRS wave.

5. Electrode Status Display AreaDisplays the error message for
electrode detachment and noise.

6. Waveform Display Area

7. Message and Key Function Display AreaDisplays the function of
the function keys F1 to F3 and screen message.
6KKEEYYPPAADD OOVVEERRLLAAYY

Purpose: Keys have an assigned numerical value and
action/function.F1, F2, F3 keys have their assigned numerical value
and the function displayed above them on the display screen.

1. Use the following keys on the operation panel to enter the
numbers of the desired setting.Refer to the printed setting list
for the current status of all settings. Every setting has a 3 digit
number to change the setting.

NNuummeerriicc KKeeyy NNuummeerriicc KKeeyy0 COPY/CAL Key 5
CLASSIFICATION Key1 F1 Function Key 6 MODE Key2 F2 Function Key 7
RHYTHM Key3 F3 Function Key 8 FEED/MARK Key4 AGE/SEX Key 9 FILTER
Key

For easy reference, place the provided 9020 program sheet on the
operation panel.

To delete the entered number, press the POSITION key.
7SSYYSSTTEEMM SSEETTUUPP MMEENNUUThe system setup menu allows
the operator to configure functions and operations to fit
particularneeds and situations it is to be used in. A list of
options will be printed out bye the instrument at thebeginning of
this exercise. Asterisks(*) indicate the current setting in the
instrument. All listed functionscan be selections/changes have been
completed, the instrument must be turned off and restarted
toactivate new settings/changes.Printer operation can be terminated
at any point by depressing the Start/Stop key.

SSEETTTTIINNGG UUPP TTHHEE SSYYSSTTEEMM SSEETTUUPP
SSCCRREEEENN1. If the power is on, turn it off.

2. Press the POWER key and COPY/CAL key together. Hold the
COPY/CAL key until the cardiograph begins to print the list
ofsettings.The System Setup screen is displayed.

To stop printing, press the START/STOP key.

NNOOTTEE::IIff yyoouu ccoonnttiinnuuee ttoo hhoolldd tthhee
CCOOPPYY//CCAALL kkeeyy wwhhiillee tthhee lliisstt ooff
sseettttiinnggss iiss pprriinntteedd,, tthhee ssyysstteemm
iinnffoorrmmaattiioonnEErrrroorr 0055 iiss pprriinntteedd aatt
tthhee eenndd ooff pprriinnttiinngg.. TThhiiss mmeeaannss tthhaatt
tthhee CCOOPPYY//CCAALL kkeeyy wwaass pprreesssseedd ffoorr ttoooo
lloonngg..

EEXXEERRCCIISSEE — CCHHAANNGGIINNGG SSEETTTTIINNGGSS IINN
TTHHEE SSYYSSTTEEMM SSEETTUUPP MMEENNUU

1. Change manual recording channels. Select 3 ch + RHYTHM (502).
On the displayed System Setup screen, enter setting number and
press START/STOP key.

2. From the printed system list, select setting number for
turning the QRS SYNC SOUND on (301). On the displayed System Setup
screen, enter setting number and press START/STOP key.

3. Verify AC Filter setting is 60 HZ. Active selections are
indicated by asterisk (*).

4.Turn Power off. At next power-up, the cardiofax will start
with new settings.

502
8System Setup T shold printout : (0000)Recorder setting :Grid
recording : On (207)*

To change configuration, press : Off (208)system set number.
then press Slow paper speed : 12.5 mm/s (211)START/STOP key. 10
mm/s (212)*Key Explanation0: COPY/CAL Baseline drift suppression :
On (214)*1: F1 Off (215)2: F2 High cut filter : 75 Hz (217)3: F3
100 Hz (218)*4: Age/Sex 150 Hz (219)5: Classification EMG
suppression : 25 Hz (220)6: MODE 30 Hz (221)*7: RHYTHM AC filter :
50 Hz (222)8: FEED/MARK 60 Hz (223)*9: FILTER Off (224)

Lead selection mode : Limb leads (226)*Cabera leads (227)

Machine Settings Date display format : yyyy/mm/dd (325)QRS
sync/pen sound selection :QRS sync sound (301 ) yyyy/mm/dd
(326)

Pen sound (302 ) mmm-dd-yyyy (327)*Off (303 )* dd-mmm-yyyy
(328)

QRS sync sound volume :1 (min) (304 )* Time display format: 12
hour day (329)*2 (305 ) 24 hour day (330)3 (306 ) Display language
: English (334)*4 (max) (307 ) Local language(335)

Alarm sound volume :0 (off) (308 )*Communication settings *1
(min) (309 ) Modem initialize command (401)2 (310 ) ATV1Q0X4S)=ODT3
(311 ) Telephone number : (402)4 (max) (312 )

Time sound volume :0 (off) (313 )* Direct/modem
connection:Direct (403)*1 (min) (314 ) Modem (404)2 (315 )3 (316 )4
(max) (317 )

Date and Time :Year (318yyyy)Month and Date (319mmdd)Hour and
Minute (320hhmm)Set (322 )

Baud rate (bps) :2400 (405) Power on4800 (406) EMG Suppression
:On (901)*9600 (407)* Off (902)19200 (408) Sex :M (903)*38400 (409)
F (904)57600 (410) Space (905)115200 (411) Age :0 (916)

After receiving :Save (412)* 1+ (917)*Print (413) System set
printing (999)Save and Print(414)

**********System Information**********Manual recording

Recording channels :3 ch (501)*3 ch + rhythm (502)6 ch (503)
Error number: 05

COPY/CALAuto recording

Auto feed after recording :On (529)*Off (530)

Auto file save :On (531)Off (532)* Date: Jul 18, 2001 7:23
PM

Include reason :On (607)Off (608)* Program: 9020KV

Measurement Table :On (612)Off (613)* Version: 01-04 01-02
01-02

**********Error History**********

No. 1 Error number: 27
9UUSSIINNGG TTHHEE SSYYSSTTEEMM TTEESSTT MMEENNUU FFOORR
SSIIMMUULLAATTEEDD EECCGG RREECCOORRDDIINNGGSS

By accessing the System Test Menu you can use the Demonstration
Mode of operation to familiarizeyourself with the instruments many
features.The resulting simulated canine tracing enables user
tofamiliarize oneself with basic operation without involving use of
an animal. All instrument functionsare active.

To access the System Test Mode:1. With the power off, PRESS BOTH
POWER key and #8 (PAPER FEED) keys simultaneously.

Hold down until printer starts to print, then release both.2.
From printed menu, select Demonstration Code (00) and enter setting
number.3. Press START/STOP key.4. Review screen-recorder should be
in AUTO MODE (Upper left corner)

System TestTest Level 1 Input unit test result

1: Demonstration (00)To check system, press system Recorder (01)
RF (RL) Normaltest number. then press Key (02) R (RA)
NormalSTART/STOP key. Memory (03) L (LA) Normal

2: LCD/LED (04) F (LL) NormalTo quit the test, press Reccumb.
Input unit (05) C1 Error key Calibration (06) C2 Error

Communication (07) C3 ErrorKey Explanation CRO/EXT1 (08) C4
Error0: COPY/CAL System Setup Initialization (10) C5 Error1: F1 ECG
Findings List Recording (11) C6 Error2: F23: F34: Age/Sex5:
Classification6: MODE7: RHYTHM8: FEED/MARK9: FILTER
10

CCAALLLLIINNGG UUPP TTHHEE TTEESSTT LLEEVVEELL 221.If the power
is on, turn it off

NNOOTTEERReelleeaassee tthhee FFEEEEDD//MMAARRKK kkeeyy
iimmmmeeddiiaatteellyy aafftteerr tthhee iinnssttrruummeenntt
ssttaarrttss pprriinnttiinngg.. IIff yyoouu ccoonnttiinnuuee ttoo
hhoolldd tthhee FFEEEEDD//MMAARRKK kkeeyy ffoorr mmoorree tthhaann
1155 sseeccoonnddss,, tthhee iinnssttrruummeenntt
rreeccooggnniizzeess tthhaatt tthhee FFEEEEDD//MMAARRKK kkeeyy iiss
sshhoorrtt—cciirrccuuiitteedd aanndd pprriinnttss tthhee
ssyysstteemm iinnffoorrmmaattiioonn EErrrroorr 0055 aatt tthhee
eenndd ooff pprriinnttiinngg..

2. Press the POWER key while pressing the FEED/MARK and
EXAMPOSITION keys together. Hold the FEED/MARK and EXAM
POSITIONkeys until the instrument begins to print the system test
procedure,relationship between the input number and its
corresponding key nameon the operation panel and system test number
list as shown below.The Test Level 2 is called up and the
instrument is in standby mode for entering the system test number
(The System Test screen appears for the ECG-9020K only as shown
below.)

To cancel printing the following information, press the
START/STOP key.

The only difference between the ECG-9010K and ECG-9020K
printoutsis the description of the key explanation.

Printout (ECG-9020K)System Test Test Level 21: Recorder (00) Cue
mark adjustment (-4.0 mm) (13)To check system, press system Thermal
head (01) Cue mark adjustment (-3.5 mm) (14)test number, then press
Recording resolution setting (02) Cue mark adjustment (-3.0 mm)
(15)START/STOP key. Key (03) Cue mark adjustment (-2.5 mm) (16)

2: Memory (single) (04) Cue mark adjustment (-2.0 mm) (17)To
quit the test, press Memory (continuous) (05) Cue mark adjustment
(-1.5 mm) (18)AUTO/MANUAL key. LCD/LED (06) Cue mark adjustment
(-1.0 mm) (19)

Input unit (07) Cue mark adjustment (-0.5 mm) (20)Key
Explanation Calibration (08) Cue mark adjustment ( 0 mm) (21)0:
COPY/CAL Communication (09) Cue mark adjustment (-0.5 mm) (22)1: F1
CRO/EXT1 (10) Cue mark adjustment (-1.0 mm) (232: F2 System Setup
Initialization (12) Cue mark adjustment (-1.5 mm) (24)3: F3 Cue
mark adjustment (-2.0 mm) (25)4: AGE Cue mark adjustment (-2.5 mm)
(26)5: SEX Cue mark adjustment (-3.0 mm) (27)6: MODE Cue mark
adjustment (-3.5 mm) (28)7: RHYTHM System Setup transfer (29)8:
FEED/MARK System Setup receiver (30)9: FILTER Reset elapsed time
(31)

Download font (32)

System Test Screen (ECG-9020K)
11

EXERCISE ONE

1. Select MMeeddiiuumm DDoogg using the AANNIIMMAALL
CCLLAASSSSIIFFIICCAATTIIOONN key2. Select 11 yyeeaarr oolldd,
MMaallee using the AAGGEE//SSEEXX key3. Select SSttaannddiinngg
PPoossiittiioon using the EEXXAAMM PPOOSSIITTIIOONN key4. Change
SSeennssiittiivviittyy setting to 2200 mmmm//mmvv ((FF22
kkeeyy))

(NNOOTTEE:: DDeeffaauulltt sseettttiinngg iiss 1100
mmmm//mmvv)5. Press FF11 key for printout (RReeaall TTiimmee
PPrriinnttiinngg Mode)6. Review printout. Note input setting made
by operator

(See sample printout on page 12)

EEXXEERRCCIISSEE TTWWOO

1. Select CCaatt using the AANNIIMMAALL
CCLLAASSSSIIFFIICCAATTIIOONN key2. Select LLeessss tthhaann 11
yyeeaarr,, ffeemmaallee using the AAGGEE//SSEEXX key3. Select
RRiigghhtt LLaatteerraall examination position using EEXXAAMM
PPOOSSIITTIIOONN key4. Change SSeennssiittiivviittyy to 2200
mmmm//mmvv using the FF22 key

(NNOOTTEE:: DDeeffaauulltt sseettttiinngg iiss 1100
mmmm//mmvv)5. Turn on the EEMMGG FFIIlltteerr using FFIILLTTEERR
((##99)) key6. Press SSTTAARRTT//SSTTOOPP key to print
(RReevviieeww RReeccoorrdd PPrriinnttiinngg Mode)7. Press CCOOPPYY
key to make a copy

(See sample printout on page 13)

EEXXEERRCCIISSEE TTHHRREEEE (DVM requests rhythm strip [Lead
II])

1. Depress RRHHYYTTHHMM key2. Acquire 3300 sseeccoonnddss
elapsed time (waveform acquisition)3. WWaattcchh eellaappsseedd
ttiimmee ddiissppllaayyeedd oonn ssccrreeeenn4. AAtt 3300
sseeccoonnddss eellaappsseedd ttiimmee, press RRHHYYTTHHMM key.
Acquisition will stop and printout begins. AAnnyy

ttiimmee uupp ttoo 6600 sseeccoonnddss ccaann bbee
aaccqquuiirreedd. If left to acquire 60 seconds of elapsed time,
printout will occur automatically at 60 seconds.

5. Review recorded rhythm strip. NNOOTTEE:: TTrraaccee
ssppeeeedd iiss ffiixxeedd aatt 2255 mmmm//sseecc

(See sample printout on page 14)
12

EEXXEERRCCIISSEE OONNEE(See instructions on page 11)
13

EEXXEERRCCIISSEE TTWWOO(See instructions on page 11)
14

EEXXEERRCCIISSEE TTHHRREEEE(See instructions on page 11)
15

EEXXEERRCCIISSEE FFOOUURR — MMAANNUUAALL RREECCOORRDDIINNGG

You can manually record the ECG waveform. During recording you
can annotate the ECG wave-forms when there is a change in animal
condition or artifact. In the manual recording mode, thebaseline is
automatically adjusted every time a recording is started, a lead
group is selected or asensitivity change is made.The paper trace
speed [Slow Paper Speed, 10 mm/sec or 12.5 mm/sec(see System
Set-up)] can be selected.

1. Change recorder settings if necessary. (Refer to System
Set-up menu)2. Press PPOOWWEERR and ##88 ((PPAAPPEERR FFEEEEDD))
keys simultaneously.3. Enter DDEEMMOONNSSTTRRAATTIIOONN MMOODDEE
(00)4. Change mode by depressing MMOODDEE ((##66)) key. From the
resulting MAIN MENU screen, select

MMAANNUUAALL RREECCOORRDD using the F2 (NEXT) key followed by
the F3 (OK) key. Note change on main menu screen (Upper left
corner).

5. Press FF11 key to select first lead Group (I, II, III)6.
Select PPAAPPEERR ((TTRRAACCEE)) SSPPEEEEDD using FF33 key. Set to
50 mm/sec. Note: Either 10 mm/sec or

12.5 mm/sec available with the slow paper speed. See System
Set-up menu for selection.7. Change SSEENNSSIITTIIVVIITTYY to 20
mm/mv using FF22 key.8. Enter patient parameters if appropriate for
later reference. Reminder; interpretation of

waveform will not be made in manual mode.9. Press
SSTTAARRTT//SSTTOOPP key to start printout.10. Press
SSTTAARRTT//SSTTOOPP key to end printout.

(See sample printout on page 16)

EEXXEERRCCIISSEE FFIIVVEE

AA — RRHHYYTTHHMM SSTTRRIIPP RREECCOORRDDIINNGG IINN
MMAANNUUAALL MMOODDEE

1. Select EExxtteerrnnaall IInn ( Rhythm [II] lead) group using
the FF11 key (I, II, III) (AVR, AVL, AVF) p Rhythm [II]

2. Acquire 3300 sseeccoonnddss of (Lead II) Rhythm lead by:a.
Press ((##77)) RRHHYYTTHHMM key.b. At elapsed time of 30 seconds,
press ((##77)) RRHHYYTTHHMM key again. Note: Will automatically

print 60 seconds of acquired time if no action is taken.c.
Review printout. Note heart rate, elapsed time and trace speed (25
mm/sec)

(See sample printout on page 17)

BB — PPRRIINNTTIINNGG RRHHYYTTHHMM SSTTRRIIPP ((LLEEAADD IIII))
DDUURRIINNGG LLEEAADD IIII MMOONNIITTOORRIINNGG
((SSUURRGGEERRYY))

1. Using the recorder setting from Exercise Four. Press the
SSTTAARRTT//SSTTOOPP key. Note: Printer starts printing lead II as
seen on recorder screen. Printout is continuous in real time.
Recorderdoes not acquire waveform nor show elapsed time.

2. Press SSTTAARRTT//SSTTOOPP key to end printing.3. Review
printout. Note that trace speed is as selected on Main Menu screen
— NOT as fixed 25

mm/sec.

(See sample printout on page 18)
16

EEXXEERRCCIISSEE FFOOUURR(See instructions on page 15)
17

EEXXEERRCCIISSEE FFIIVVEE ((AA))(See instructions on page
15)
18

EEXXEERRCCIISSEE FFIIVVEE ((BB))(See instructions on page
15)
19

AATTTTAACCHHIINNGG TTHHEE EELLEECCTTRROODDEESS AANNDD
PPEERRFFOORRMMIINNGG AANN EECCGG

LLeeaavvee tthhee iinnssttrruummeenntt ttuurrnneedd ooffff
uunnttiill tthhee lleeaaddss aarree aattttaacchheedd aanndd tthhee
aanniimmaall iiss ccaallmm..

Right lateral recumbency is the standard body position for
recording the ECG in the dog and cat. If respiratory distress is
evident, the ECG should be recorded with the animal standing or in
sternal position.

To obtain the most accurate assessment of the ECG tracing, care
needs to be taken toavoid undo stress, and minimize the white coat
effect.The animal should be allowed toacclimate to the area.
Establishing contact with the animal is important, especially for
the person that will be administering the ECG.The area where the
recording is to be taken should be quiet and away from the hub-bub
of the ongoing practice activities.Owner participation will also
minimize anxiety, especially in cats. Excessive restraint is also
not desirable. Dogs may be more comfortable on the floor than begin
raised to tables. Cats could be left in the owners lap. Use of
sedatives and anesthetics is not advisable for diagnostic
recordings. If used, their likely affects should be understood and
taken into consideration when assessing the interpretations
provided.

Attach the electrodes to the skin and moisten with 70% alcohol
or ECG gel. When using alcohol, avoid excessive amounts and having
alcohol travel between leads.This in effect is the same as having
the electrodes touch each other!
20

AATTTTAACCHHIINNGG TTHHEE LLIIMMBB EELLEECCTTRROODDEESS

Attach four limb electrodes to soft muscular, not bony, areas at
the limb joints using the followingsteps.

1. Clean the skin with a cotton moistened with alcohol to remove
oil.

2. Connect the patient cable to the electrodes.

3. Apply a small amount of 70% alocohol or electrode gel on
thecontact surfaces of the electrodes.

4. Clip the cleaned electrode site with the electrode.

PPAATTIIEENNTT CCAABBLLEE TTIIPP CCOOLLOORR CCOOAATTIINNGG

Firmly insert the lead tip of the patient cable to the
electrode, matching the tip color and electrodesite. Refer to the
table below.

LLEEAADD CCOONNNNEECCTTIIOONNAAHHAA SSTTAANNDDAARRDD

SITE

RIGHT FORE LIMB

LEFT FORE LIMB

RIGHT REAR LIMB

LEFT REAR LIMB

CODE

RA

LA

RL

LL

COLOR

WHITE

BLACK

GREEN

RED
21

PPRROOBBLLEEMM SSOOLLVVIINNGG WWIITTHH CCAATTSS

Unlike humans and most dogs, the cardiac axis is not aligned top
right to bottom left in cats.Theheart has a tendency to lie more
centrally with its apex more ventral than the atria, i.e., the
heartpoints downward towards the ground when the animal stands.This
gives rise to one of the common problems with monitoring cats,
finding the strongest signal topresent to the RA and LL
electrodes.

The best signal is derived top/bottom axis i.e. Lead II in
humans, with RA looking at the top of theheart and LL at the
bottom. In cats, as stated, the axis may not lie across the body.
(see figure 1)

As lead II may not align with the cats axis, the signal is small
and sometimes cancels.Therefore, bymoving RA more centrally onto
the cats body above the top, and LL onto the cats body below
thebottom of the heart, a much larger signal will be obtained.

The plane in which the cats heart lies within its body may also
vary.

The top of the heart may be more dorsal and the bottom more
ventral. In this case, we would referto the base/apex axis (see
figure 2) when the following instructions should be followed.

1. Move LL to the left apex of the heart.

2. Move RA to the V10 position (over the dorsal spinous process
of the seventh thoracic vertebra) and LL to the V4 position (sixth
left intercostal space at the costochondrail junction). It will be
necessary to annotate the printouts, if any, with actual
configurations used to avoid later confusion.

Figure 1

Figure 2
22

TTRROOUUBBLLEESSHHOOOOTTIINNGG

AACC IInntteerrffeerreennccee Appears on the ECG as even-peaked,
regular voltages superimposed throughout the tracing. It may appear
in conjunction with muscle tremor.

Causes: Dirty or corroded lead wire tips or electrodes Loose
electrode connection Patient or technician touching an electrode
during recording Patient touching any metal part of a bed or
examination table Broken lead wire, patient cable or power cord
Electrical devices in the immediate area, lighting, concealed

wiring in walls or floors Improperly grounded electrical
outlet

MMuussccllee TTrreemmoorr Appears on the ECG as random,
irregular voltages superimposedIInntteerrffeerreennccee ((EEMMGG))
on the tracing. It may resemble or occur in conjunction with AC

interference.

Causes: Patient is uncomfortable, tense, nervous or apprehensive
Patient is cold and shivering Patient has neuro or muscular
disorder Examination table is too narrow or short to support
limbs

comfortably Patient may have white coat effect

See Getting a Quality ECG for suggestions
23

WWaannddeerriinngg BBaasseelliinnee Appears on the ECG as a
fluctuation of the tracing up and downward on the grid.

Causes: Dirty or corroded electrodes Loose electrodes or
electrodes positioned on a bony area Insufficient or dried out
Alcohol or Electrode Gel Rising and falling of chest during normal
or apprehensive

respiration

When wandering baseline occurs: Clean skin with alcohol or
acetone if necessary Reposition electrodes Check the electrode
connections Assist the patient in relaxation

OOtthheerr When an electrosurgical unit is used with the
cardiograph, noise generated by an ESU is superimposed on the ECG
waveforms.

Equipment in the same room as the cardiograph may generate noise
which is superimposed on the ECG waveforms. Noise generated by an
electrosurgical unit Noise from AC power line Spike noise caused by
electrostatic energy as shown below

..
24

So you are a veterinary technician and you would like tolearn
how to interpret electrocardiograms (ECGs). Great idea!What is
reasonable to expect of yourself? Even veterinarianscan be somewhat
daunted by all those squiggly lines.

After 20 years as a technician in the cardiology section of
theVeterinary College at the University of Minnesota, I can
testifythat learning to read ECGs is fun, well within your grasp,
andcan be a tremendously satisfying skill to have tucked underyour
belt.

You can master the technique of recording an ECG as well
aslearning the fundamentals of arrhythmia interpretation.Although,
measuring the ECG to assess heart chamber enlarge-ment is certainly
not beyond your skill level, it can be a tediousphase of the
learning process. The good news is that your vet-erinarian can use
other tools, such as radiographs and ultra-sound to determine heart
chamber size. This allows us to focuson arrythmias which are more
fun and require almost no meas-uring. Recording the ECG

The ECG can be recorded with the patient right side down orin a
standing position with any standard ECG strip chartrecorder.1.
Attach the electrode clips directly to the skin (taking care
toattach the correct electrodes to the appropriate limbs) and
mois-ten with alcohol or gel to assure good contact.2. Enter a 1 cm
= 1 m V calibration signal.3. Record lead II for about a minute at
25 mm/sec to assessarrythmias. Increase the length of the tracing
if an arrhythmia isseen. If you are determined to measure waveforms
as well,record a brief tracing at 50 mm/second.

Its helpful to center the tracing on the paper so that both
thetop and bottom of the waveforms can be seen. Also, decreasethe
sensitivity to 1/2 cm = 1 mV if the QRS complexes go offthe
paper.The Normal ECG

Next on the agenda is learning what a normal ECG looks like- and
why.

You probably already know all the anatomy you need. Theheart has
four chambers: two atria and two ventricles. They areconnected by a
conduction system that spreads an electricalcurrent that enables
the heart to contract. The ECG is simply agraphic recording of this
electrical activity during the differentphases of the cardiac
cycle.

Read Between the LinesLearning to interpret electrocardiograms
will prove invaluable to your patients and practiceBy: Naomi L.
Burtnick, MT (ASCP)

The normal sequence of electrical activation in the heart is
asfollows:1. Sinoatrial (SA) node — located in the right atrium.2.
Atrioventricular (AV) node — conduction link between theatria and
ventricles.3. Left and right bundle branches — located in the left
and rightventricles.

The following waveforms are part of a single heart beatP wave —
corresponds to atrial contractionPR interval — corresponds to the
time it takes for the impulse topass through the AV nodeQRS waves —
correspond to ventricular contractionQ is the first negative
deflection.R is the first positive deflection.S is the negative
deflection that follows the S wave.

Note: Not all QRS complexes have a Q and an R and an S.Thats
OK.T wave — represents ventricular relaxation. T waves can be
posi-tive or negative, but every QRS complex has to have one. If
itcontracts it has to relax before it can contract again.

Calculating the Heart RateThe heart rate (beats/min) can be
calculated easily by count-

ing the number of beats (R-R intervals) between two sets ofmarks
in the margin of the ECG paper (3 seconds at 25mm/sec) and
multiplying by 20. ECG rulers are also available.this is all the
measuring thats necessary.
25

Recognizing ArrythmiasThis is where you will be of most help to
you patient and the

staff at your clinic. Think how much more interesting your
jobwill be if you watch a monitor during a surgery; you can
beresponsible for alerting the doctor if abnormal beats occur.

To recognize arrythmias you need to know two things:1. The site
of origin of the abnormal beat.2. Recognize deviations from the
normal rate of automaticityfor that site.Site of Origin

Three different sites can be identified on lead II by the
following features:

Atrial origin — These beats originate from nowhere in the atria
other than the SA mode. They look just like a normally conducted
beat except that their timing is very early. A big hint is that the
P wave of the atrial beat touches the T wave of the beat before
it.

Junctional origin — These beats originate near the AV node and
have a negative deflection P wave, or no P wave, with a normally
conducted, short duration QRS complex.

Ventricular origin — These beats originate somewhere in the
ventricles. No P waves are evident. QRS complexes arewide and
bizarre appearing

and may be positive or negative polarity.

Intrinsic Rates of AutomaticityAtrial, junctional and
ventricular sites each have a normal rate

of automaticity (the ability to initiate impulses), buy
mayrespond in the following abnormal ways:Too fast (tachycardia)
Too irritable (premature)Too slow (bradycardia) Absent
(block)Normal pacemaker rates in the dog:

A great rule of thumb: Whichever site is fastest will drive
theheart.

A Case ExampleHeres an example to get you thinking along these
lines. a 7-

year-old male boxer lethargically walks into the exam roomwith a
history of exercise intolerance. You run a lead II rhythmstrip that
looks like the following:

How are we going to analyze it? Scanning from left to rightyou
see a P wave, PR interval, R wave (its OK for a QRS com-plex not to
have a Q an R and an S) and a negative T wave. Inother words, a
normally conducted heat, which is followed bytwo more normally
conducted heats. The fourth beat has alarge, wide QRS complex with
a big negative T wave. Whatsite do you think it originates from? It
cant be atrial becausethere is no P wave. It cant be junctional
(near the AV node)because its too wide and sloppy looking and
junctional beatsshould be of normal duration. But it definitely
fits the criteriafor a ventricular origin beat! To further describe
it we also usethe term premature because it comes before the next
expectednormal beat. Next, are four more normally conducted beats
fol-lowed by another VPC (ventricular premature
contraction).Wouldnt it be nice if they all came labeled! Can you
spot thenext VPC on the strip?

This strip is recorded from the same dog one hour later. Asyou
can see, there are five normally conducted beats followedby a long
run of ventricular origin beats.

We have already decided the site of origin. the next step is
todecide if this an appropriate rate for that site. Heres a chance
topractice the technique for calculating heart rate.
Countingbetween the markers (3 seconds at 25mm/second) we have
15beats. If we multiply by 20 we will have the number of beats in60
seconds. therefore, 20 x 15 = 300 beats per minute. Thatsway above
the normal healthy ventricular conduction tissue rateof 20-40 beats
per minute indicated on the illustration of nor-mal pacemaker rates
in the dog. Now we want to apply the termtachycardia to imply that
the rate is too fast for that particu-lar site. Ventricular
premature contractions and ventriculartachycardia are a significant
finding in boxers. This breed ispredisposed to a form of dilated
cardiomyopathy which haslife-threatening arrythmias.A Second Case
Example

A middle aged female miniature schnauzer faints while walk-ing
into the exam room, then gets up as if nothing happened.The ECG you
run looks like this:

Clearly, that long flat line is not normal. But how do we
decidewhat site in the heart is creating the problem? As was
men-tioned earlier, in the normal sequence of electrical activation
in
26

the heart the SA node (the primary pacemaker of the
heart)stimulates the atria generating a P wave, the impulse
continuesthough the AV node (PR interval) , and down into the
ventricles(QRS complex). But in this case, there is no P, PR or
QRSwhich implies that the SA node never started the wholesequence
or was blocked in the process. Hence, the term SAblock to describe
this abnormality. SA block is a feature of aconduction disease
called sick sinus syndrome. Surgicallyimplanting an artificial
pacemaker will restore almost normalquality of life.

Dont feel pressured to learn everything at once. It will
beextremely helpful even if you only learn how to record an
ECGwell. Simply recognizing that an abnormal beat has occurredand
alerting your veterinarian will be appreciated. The key isrunning
lots of ECGs and trying to learn a little more from eachone.

NNaaoommii LL.. BBuurrttnniicckk,, MMTT ((AASSCCPP)) wwoorrkkss
aatt VVeetteerriinnaarryySSppeecciiaallttyy RReeffeerrrraall
CCeenntteerr,, VVEETTMMEEDD ((DDrr.. TTiilllleeyy
&&AAssssoocciiaatteess)),, iinn SSaannttee FFee,,
NNMM..
27

Some electrocardiographic complexes to emphasize differences in
rate, rhythm, and shape.

Normal Sinus Rhythm

Impulses originate at SAnode at normal rate

Sinus Bradycardia

Impulses originate at SAnode at slow rate

Sinus Tachycardia

Impulses originate at SAnode at rapid rate

Sinus Arrhythmia

Impulses originate at SAnode at varying rate

Nonsinus Atrial (Coronary sinus) Rhythm

Impulses originate low inatrium travel retrogradeas well as
distally

Normal Sinus Rhythm

Impulses originate at SAnode at normal rate

Variations in P wave con-tour, PR interval, PP, andRR
intervals

All complexes evenly spaced; rate 60 to 100 / minute

All complexes normal, evenly spaced; rate 100 / minute

All complexes normal but rhythmically irregular. Longest PP orRR
interval exceed shortest by 0.16 second or more

P waves inverted in leads II, III, and a VF
28

Some electrocardiographic complexes to emphasize differences in
rate, rhythm, and shape.

Idioventricular Rhythm

Accelerated Idioventricular Rhythm (AIVR)

VentricularTachycardia

Ventricular Fibrillation

Pacer Rhythm

Rate < 40 / minute

Rate 40 to 120

Rate > 120

Pacemaker spike
29

PP WWaavvee:: the P wave is the first positive deflection and
represents atrial depolarization. It normallyappears smoothly
rounded and recedes each QRS complex at a specific interval.PP—RR
IInntteerrvvaall:: the P-R interval represents impulse conduction
through the atria and into the AV node.It extends from the
beginning of the P wave to the onset of the Q wave.QQRRSS
CCoommpplleexx:: the QRS complex represents ventricular
depolarization. It consists of three deflec-tions.The Q-wave is the
first negative deflection after the P wave. it results from the
initial left-to-rightseptal depolarization. the R wave is the first
positive deflection after the P wave.The S wave is thenegative
deflection following the R wave.SS—TT IInntteerrvvaall:: the S-T
segment extends from the end of the S wave to the beginning of the
T wave.T Wave: the T wave represents ventricular repolarization.
Normally this wave is positive and symmet-rical, but drugs, change
in position, electrolyte imbalance, and food intake may alter the T
wave.QQ—TT IInntteerrvvaall:: the Q-T interval extends from the
beginning of the QRS complex to the end of the Twave. it represents
ventricular depolarization and repolarization.UU WWaavvee:: the U
wave is a small positive deflection after the T wave. It reflects
repolarization of thePurkinje fibers.This wave is not usually
visible on the ECG.

Technical or mechanical problems that are superimposed on the
normal P-QRS-T complexes areknown as artifacts. Other equipment in
the area that uses electrical current may cause artifacts.Muscle
tremor or body movement may also cause artifacts, and efforts
should be made to calm theanimal and make it comfortable. It is
important to place the electrode clips correctly and hold thelimbs
away from the body during right recumbent position to prevent the
electrodes from moving withthe thoracic respiratory motions.

IInnddiiccaattiioonnss ffoorr
EElleeccttrrooccaarrddiiooggrraapphhyyElectrocardiography is useful
in clinical veterinary practice:1. In the definitive diagnosis of
cardiac arrythmias.2. As an adjunct to determine cardiac
enlargement (dilatation or hypertrophy)3. As an indicator of
certain electrolyte, acid-base, systemic, or metabolic
disorders.4.To individualize heart failure therapy.

TThhee AAbbnnoorrmmaall EElleeccttrrooccaarrddiiooggrraammThe
first and most important step in ECG interpretation is
differentiating between normal and abnor-mal waveforms.The second
step is differentiating between the various abnormal ECG patterns
andcorrelating them with known cardiac entities.

A Simple Checklist:1. Are the P waves present?

a. If not, is there other evidence of atrial activity
(fibrillatory waves)?2. What is the relationship between atrial
activity and QRS complexes?

a. What are the atrial and ventricular rates?b. Is a P wave
related to each QRS complex?c. Does a P wave precede or follow the
QRS complex?d. Is the P-R and R-R interval constant?

3. Are the P waves and QRS complexes regular or irregular?4. Are
the QRS complexes wide or normal?5. Is the ventricular rhythm
regular or irregular?6. Are there pauses or premature complexes
that require explanation?
30

EElleeccttrrooccaarrddiiooggrraapphhiiccaall SSiiggnnss ooff
PPaatthhoollooggiiccaall CChhaannggeess iinn tthhee HHeeaarrttRight
atrial enlargementP wave is usually tall, slender, and peaked.

Left atrial enlargementIncreased duration of the P wave,
notching of the P wave.

LLeefftt VVeennttrriiccuullaarr EEnnllaarrggeemmeennttAs a
result of the increased muscle mass the height of the R wave is
increased, the QRS complexis delayed or altered in conduction, the
S-T segment is depressed, and the T wave is changed.

CCoonndduuccttiioonn
AAbbnnoorrmmaalliittiieessSSiinnooaattrriiaall BBlloocckkSinoatrial
(SA) block is a disturbance of conduction in which the SA nodal
impulse is blocked fromdepolarizing the atria.Causes: dilatation,
fibrosis, cardiomyopathy, drug toxicity, and electrolyte
imbalances.ECG: SA block is suggested when pauses in the rhythm are
precise multiples of normal R-R inter-vals.The P wave and the QRS
complexes are usually of normal configuration.

Figure 4-17 sinoatrial block or arrest in a female miniature
schnauzer with syncope. Note the ventric-ular escape complex
(arrow).

FFiirrsstt DDeeggrreeee AAVV BBlloocckkA delay or interruption
in conduction of a supraventricular impulse through the AV junction
and bun-dle of His is called AV block.First-Degree AV block may
occur in animals that are clinically normal and healthy.ECG:
Prolonged P-R interval, QRS complex and P wave are usually
normal.

Figure 4-19: First-Degree and second-degree AV block in a dog
with syncope.The P-R interval isprolonged (0.14 second). Every
other atrial impulse is conducted (2:1 second-degree block).

SSeeccoonndd—DDeeggrreeee AAVV BBlloocckkSecond-degree Av block
is characterized by an intermittent failure or disturbance of AV
conduction.The second-degree AV block can further be characterized
as Mobitz type I (Wenckebach phenome-non) usually type A and Mobitz
type II, usually type B.
31

ECG: One or more P waves are not followed by QRS-T
complexes.

CCoommpplleettee HHeeaarrtt BBlloocckkComplete heart block
occurs when AV conduction is absent and the ventricles are under
the controlof pacemakers below the area of the block.Clinical signs
associated with complete heart block are syncope, sudden death, and
congestiveheart failure.ECG:The ventricular rate is slower than the
atrial rate (more P waves than QRS complexes).

Figure 4-21 Complete heart block with an indioventricular escape
rhythm (arrows) of 30 beats/min.from a dog with syncope and severe
ascites. A cardiac neoplasm was found at necropsy. (Tilley
LP:Essentials of Canine and Feline Electrocardiography. 2nd Ed. Lea
& Febiger, Philadelphia, 1885.)

AArrrryytthhmmiiaassAn arrhythmia is an abnormality in the rate,
regularity, or site of cardiac impulse and/or disturbanceof impulse
conduction. during normal sinus rhythm, the cardiac impulse
originates in the SA nodeand spreads throughout the atria, AV node
and His-Purkinje system, and ventricles.

AArrrryytthhmmiiaass OOrriiggiinnaattiinngg iinn tthhee
SSiinnuuss NNooddee SSiinnuuss TTaacchhyyccaarrddiiaaSinus
tachycardia is the most common arrhythmia in the dog and the cat.
All ECG criteria are nor-mal except that the heart rate is above
160 bpm in the dog and above 240 bpm in the cat.Examples of
physiologic conditions associated with sinus tachycardia include
pain, fright, or excite-ment. Pathological conditions include
fever, shock, anemia, infection, congestive heart failure,
hypox-ia, and hyperthyroidism. Drugs that can cause sinus
tachycardia include atropine, epinephrine, keta-mine, and
vasodilators.

SSiinnuuss BBrraaddyyccaarrddiiaaA regular sinus rhythm slower
than the normal sinus heart rate is sinus bradycardia. Sinus
bradycar-dia can occur from severe systemic disease (e.g. renal
failure), from toxicities, with dilated cardiomy-opathy in the cat,
or during end-stage heart failure.Physiologic causes of sinus
bradycardia include increased vagal tone due to carotid sinus
pressure,eyeball compression, or elevated intracranial
pressure.Drug induced causes include tranquilizers, digitalis,
quinidine, morphine, and various anestheticagents.ECG criteria are
normal except that the heart rate is less than 70 bpm in the dog
and less than 160bpm in the cat.

SSiinnuuss AArrrreessttSinus arrest is a failure of SA nodal
impulse formation caused by depressed automaticity.ECG:The rhythm
can be regular or irregular with pauses demonstrating a lack of
P-QRS-T complex-es.
32

AArrrryytthhmmiiaass OOrriiggiinnaattiinngg iinn tthhee
AAttrriiaall MMuussccllee

AAttrriiaall PPrreemmaattuurree CCoommpplleexxeessAtrial
premature complexes arise from ectopic atrial foci.They are
frequently caused by cardiac dis-ease and may progress to atrial
tachycardia or atrial fibrillation.Atrial premature complexes are
often caused by atrial enlargement from acquired chronic
valvularinsufficiency, primary myocardial disease, right atrial
hemangiosarcoma, hyperthyroidism, digitalis tox-icity, general
anesthesia, and various drug, chemical or noxious stimuli.

Figure 4-36 Atrial premature complexes (arrows) and P mitrale in
a dog with congestive heart failure.

ECG: Usually normal heart rate, but the rhythm is irregular due
to the premature P wave that dis-rupts the normal sinus-initiated P
wave rhythm.

AAttrriiaall FFiibbrriillllaattiioonnAtrial fibrillation is
common in the dog and is usually associated with severe organic
heart disease. itis usually associated with chronic AV valvular
insufficiency in small breeds, dilated cardiomyopathyin large and
giant breeds, and congenital heart defects.

ECG: Atrial and ventricular rates are rapid an totally
irregular. Large oscillations waves replace thenormal sinus P
waves.

AArrrryytthhmmiiaass OOrriiggiinnaattiinngg iinn tthhee
VVeennttrriiccuullaarr MMuusscclleeVVeennttrriiccuullaarr
PPrreemmaattuurree CCoommpplleexxeessVentricular premature
complexes (VPCs/PVCs) are impulses that arise from an ectopic
ventricularfocus.Cardiac causes of VPCs include congestive heart
failure, myocardial infarction, neoplasia, pericardi-tis, traumatic
myocarditis, idiopathic myocarditis in boxers and Doberman
pinschers, and bacterialendomyocarditis. Secondary changes include
changes in autonomic tone, hypoxia, anemia, uremia,pyometra,
gastric-volvolus, pancreatitis, and parvovirus. Drugs that can
cause VPCs include digitalis,epinephrine, anesthetic agents and
atropine.
33

ECG: Heart rate is usually normal. the ectopic QRS complex is
premature, bizarre, and often of largeamplitude.The T wave is
directed opposite to the QRS deflection. VPCs of identical shape
are calledunifocal when the QRS is variable, they are termed
multiformed.

VVeennttrriiccuullaarr TTaacchhyyccaarrddiiaaVentricular
tachycardia is a continuous series of three or more VPCs.The same
conditions thatcause VPCs also cause ventricular tachycardia.

ECG: QRS complexes are wide and bizarre with T waves directed
opposite to the QRS deflection.There is no relationship between the
QRS complexes and the P waves; the P waves may precede,be hidden
within, or follow the QRS complexes.

VVeennttrriiccuullaarr FFiibbrriillllaattiioonnVentricular
fibrillation causes cardiac arrest and is often a terminal event.
Ventricular contractions areweak and uncoordinated. Cardiac output
is essentially nonexistent.

ECG:The heart rate is rapid with irregular chaotic and bizarre
waves. P waves cannot be recognized.
34

EEffffeecctt ooff SSeelleecctteedd DDiisseeaasseess oonn tthhee
EElleeccttrrooccaarrddiiooggrraammHHyyppeerrkkaalleemmiiaaHyperkalemia
is a common clinical problem in cats with urinary tract
obstruction. Addisons diseaseis a common cause of hyperkalemia in
the dog.ECG Changes:K+>5.5 mEq/l:T waves larger and
peaked.K+>6.5 mEq/l: R wave decreased, QRS prolonged, P-R
interval prolonged.K+>7.0 mEq/l: P wave amplitude decreased, P
wave duration increased, QRS longer, P-R intervallonger, Q-T
interval prolonged.K+>8.5 mEq/l: P wave disappearance, atrial
standstill, sinoventricular rhythm.K+>10.0 mEq/l: Ventricular
fibrillation or ventricular asystole.

Figure 4-30 (A) Hyperkalemia in a dog presenting with
hypovolemic shock due to addisonian crisis.P waves are absent and T
waves are tall and peaked. Serum potassium was 8.4 mEq?L. (B)
Afterinstitution of therapy, P waves are present and the QRS-T
complex is of smaller amplitude. Serumpotassium was 4.8 mEq/L.
(Tilley LP: Essentials of Canine and Feline Electrocardiography,
2nd Ed.Lea & Febiger, Philadelphia, 1985.)

PPeerriiccaarrddiiaall EEffffuussiioonnECG: Decreased QRS
amplitude, S-T segment elevation in lead II and P-R segment
depression inlead II.

Figure 4-31 Electrical alternans in a dog with pericardial
effusion. Every other R wave alternates inamplitude.

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1. GENERAL

1.12 Service Manual ECG-9010/9020 Rev A

ECG-9020KElectrocardiograph

GC-0011 Motor Assy

RH-0001 Magazine Assy

RK-0004 Thermal Head Assy

RK-0005 Speaker Assy

RK-0006 Battery Terminal Assy

RK-0009 ECG-9020K Top Casing Assy

SC-903D Power Unit

UT-23561 ECG Control Board

VL-0001 LCD Assy

RK-0002 Bottom Casing Assy

RK-0003 Internal Parts

(Optional)

ECG-9020K

KD-103E Cart

KH-801E Patient Cable Hanger

DI-106D Fixing Plate for Cart

YC-901D Carrying Case

UT-2357 Flash ROM Board

••••• To order a replacement assembly above, use the Code No.

••••• To order a replacement component inside an assembly, refer to “Section 7

Replaceable Parts List”.

1. GENERAL

Service Manual ECG-9620 1.17

Composition

· To order a replacement assembly above, use the Code No.

· To order a replacement component inside an assembly, refer to “Section 7

Replaceablet Parts List”.

RHC-0004 Record Assy

RHC-00041 Motor Assy

UTC-0009 Paper senser board

UTC-0010 Motor sensor board

RHC-00042 Magazine Assy

RKC-0001 Transfer Assy (220 V) for L and P version

RKC-0002 Transfer Assy (230 V) for M version

RKC-0003 Transfer Assy (240 V) for N version

RKC-0004 Transfer Assy (110 V) for S version

RKC-0005 Transfer Assy (120 V) for T version

RKC-0006 Transfer Assy (127 V) for U version

UTC-0006 Key board

UTC-0007 ECG control board

UTC-0008 Power board

ECG-9620L

ECG-9620M

ECG-9620N

ECG-9620P

ECG-9620S

ECG-9620T

ECG-9620U

KD-103E Cart

KH-801E Patient Cable Hanger

ECG-9620 Standard Components

Options

1. GENERAL

Service Manual ECG-9010/9020 Rev A 1.13

Location

Thermal Head Assy

Motor Assy

Speaker Assy

ECG Control Board

LCD Assy (for ECG-9020K only)

Flash ROM Board

Inverter Board(for ECG-9020Konly)

Power Unit

1. GENERAL

1.18 Service Manual ECG-9620

Location

Transfer Assy

Thermal Head Assy

Motor Assy

Key board

ECG control board

LCD

Buzzer

Power board

1. GENERAL

1.14

Block Diagram

ACsou

NOTEThe LCD module and inverter board are used for the ECG-9020K only.

ECG Control Board(UT-23561)

Motor, Motor sensor,Mark sensor

Membrane key

LCD module

Inverter board

Thermal head

Power Unit (SC-903D)rce

Battery

CNJ035 (30pin)CN021(30pin)

CNA014

Piezo-electricbuzzer

2 pin

5 pin

CNA011

CNA012

CNJ032 (2pin)

CNJ036 (12pin)

CNJ033 (40pin)

CNJ012 (12pin)

CNA015CNJ013 (6pin)

CNA013CNJ011 (12pin)

CN11 (3pin)

CN51 (4pin)

Flash ROM Board(UT-2357)

CNJ011 (80pin)

CNJ031 (D-SUB 9pin)

CNJ043 (mini jack)

SIO

EXT-IN

CRO

Patient InputCNJ091 (D-SUB15pin)

CNJ021 (80pin)

CNJ041 (mini jack)

CN31 (16pin)

Service Manual ECG-9010/9020 Rev A

ECG input connector A/D GA Isolater

EXT input Amp/A/D converter

32 bit CPU

CRO Amp/A/D converter

RS232C driver

ROM

DRAMROMsystem software

RTC

Backup batttery

Flash ROM256KBData filing

Flash ROM1 MBFont, Local langrage

Operation panel 4 bit CPU

Battery voltage detection

Thermal head temperature detection

Flash ROMboard 2 MB

AC input

Battery charger

Battery

Switching regulator

AC/DC selecter

DC/DC converter

Charge pump

+24 V to Thermal head

+5 V

+12 V

Motor assy Paper senser Thermal head

LCD module Inverter board

Video RAM 16 KB

Sound I/FBuffer RAM 8 KBfor thermal head

Paper/papermark detection

CPU I/FPort

ECG I/F LCD control

Power unit

ECG Control board

Gate array

5. BOARD/UNIT DESCRIPTION

Service Manual ECG-9620 5.1

Block Diagram

Buzzer

CNA011

CNA012

CNA014

CNA013

CNJ091 (D-sub 15 pin)

Patient cable connector

CNJ032 (2 pin)

CNJ021 (80 pin)

CNJ036 (10 pin)

CNJ031 (9 pin)

CNJ043 (miniature plug)

CNJ041 (miniature plug)

CRO output connector

External input connector

SIO connector

CNJ011 (16 pin)

CNJ033 (24 pin)CNJ201 (12 pin)

CNJ101 (34 pin)

CNJ035 (30 pin)

CNJ201 (30 pin)

CNJ101 (2 pin)

CNJ102 (3 pin)

Thermal head

Key board

LCD

ECG control board

Battery (SB-901D)

Power boardPower transformer unit

AC socket

Motor sensor

Paper sensor

Motor

16bits CPU

A/D

Conv

TRANS

—

MOTOR

PWM Control

Gate Arry

Lead Fail

Pace Marker EEPROM

+12V,-12V

+2.5V,-2.5V12V

12V Reg

Charge

DC/DC conv

Control

24V

12V

AC INPUT

LCD

4bits CPU

AC-DC Conv

Contrast Control

Main CPU

LCD 256 Kbits SRAM

2 MB FlashROM

16 MB FlashROM

16 Mbits DRAM

CLOCK RTC

T.H 256 Kbits SRAM

DC/DC Conv

A/D Conv

CRO AMP

RS232C

Speaker AMP

Data FilesSystem Setting

ProgramFont

+8V,-8V

Ext In Amp

SPEAKER

Gate ArryPaper Sensor

Motor Sensor

Thermal head24V

Detection

320×240

ECG control BD

Operation BD

Power BD

I = L — R II = F — R III = II — IaVR = I + II/2 aVL = 2I — II/2 aVF = 2II + I/2

R1R1R1

1. GENERAL

Service Manual ECG-9010/9020 Rev A 1.15

Connection Diagram

Index Connector No. NK Code No. Description

1* CNA011 543993A ZHR-2 speaker cable (L50)

2 CNA012 544002A ZHR-12 motor cable (L120, 65)

3 CNA013 544029B FCN723/DF11(100)/51021(40)

4 CNA014 544011A EHR-4 battery terminal cable (L150)

5 CNA015 544038A 51021-0500/51021-0600 (L50)

* We cannot provide this cable seperately; we can only provide it as part of a complete Speaker assy. Refer to

“Speaker Assy” in Section 8.

CNA011

CNA014

CNA012

CNA013

CNA015

6. DISASSEMBLY

Service Manual ECG-9620 6.3

No. Code No. Description

CNA011 08SK3.670.00216A ZHR-10 L=120, 90, 130 between motor assy and ECG control board

CNA012 08SK3.670.00181B PHR-16 L=80, between thermal head and ECG control board

CNA013 08SK3.670.00172A PHDR-24VS (W=100), between key board and ECG control board

CNA014 08SK3.670.00199B SHDR-30V-S-B (W=60), between power board and ECG control board

CNA012 cable

CNA014 cable

CNA013 cable

CNA011 cable

ECG-9620Power supply Connector Pin No.

+5 V for digital circuit CNJ201 (Power BD) -CNJ035 (ECG control BD)

pin 12 to 14(GND: pin 15 to 23)

+12 V for analog circuit CNJ201 (Power BD) -CNJ035 (ECG control BD)

pin 10 to 11(GND: pin 15 to 23)

+24 to 30 V for thermalhead

CNJ201 (Power BD) -CNJ035 (ECG control BD)

pin 24 to 30(GND: pin 15 to 23)

+5 V for LCD CNJ201 (Key BD) to LCD module pin 7 (GND: pin 2)Motor CNJ036 (ECG control BD) —

Motor/Motor sensor/Paper sensor Motor rotation detection: pin 8Motor power (+): pin 9Motor power (-): pin 10GND: 3

ECG-9020Power supply Connector Pin No.

+5 V for digital circuit CNJ201 (Power unit) -CNJ035 (ECG control BD)

pin 25 to 27(GND: pin 1 to 15)

+12 V for analog circuit CNJ201 (Power unit) -CNJ035 (ECG control BD)

pin 28 and 29(GND: pin 30)

+24 V for thermal head CNJ301 (Power unit) -Thermal head

pin 1 to 6(GND: pin 7 to 24)

+28 V for LCD CNJ013 (ECG control BD) -LCD module

pin 12(GND: pin 11)

+12 V for LCDbacklight

CNJ012 (ECG control BD) -Inverter BD

pin 1(GND: pin 2)

Motor CNJ036 (ECG control BD) -Motor/Motor sensor/Paper sensor

Motor rotation detection: pin 10Motor power (+): pin 11Motor power (-): pin 12GND: 8

9. TROUBLESHOOTING AND ERROR MESSAGES

9.10 Operator’s Manual ECG-9620

Checking the Software Version

The software version numbers are also printed at the bottom space of the paper in

automatic or manual ECG recording.

Model

System Software Input unit

ECG analysis

9. TROUBLESHOOTING AND ERROR MESSAGES

Operator’s Manual ECG-9620 9.9

System Information and Error History

During power-up and operation the cardiograph continuously checks itself for

system failure. If a failure is detected, system information and error history are

printed on the recording paper and all operations are stopped. System information

and error history are also printed due to transient noise. After printing the system

information and error history, the power of the instrument is automatically turned

off.

NOTEIf the same system information appears again after restarting the

cardiograph, do not use the cardiograph until service personnel has

corrected the cause of the problem. Sending a copy of the system

information to your nearest Nihon Kohden distributor helps us to

troubleshoot your problem quickly.

System Information

Indicates an error number to identify the problem. Refer to the Service manual.

Error History

Indicates the latest three errors and the date of the latest error, as in the example

below.

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

Service Manual ECG-9620 3.7

System Error Message

During power-up and operation the instrument continuously checks itself for

system failure. If a failure is detected, system information and error history are

printed on the recording paper and all operations are stopped. System information

and error history are also displayed or printed due to transient noise. After printing

the system information and error history, the power of the instrument is

automatically turned off.

NOTEIf the same system information appears again after restarting the

instrument, do not use the instrument until service personnel has

corrected the cause of the problem. Sending a copy of the system

information to your nearest Nihon Kohden distributor helps us to

troubleshoot your problem quickly.

System Information

Indicates an error number to identify the problem. To solve the problem, do the

corrective action described below.

Error No. Meaning Corrective Action

00 Input unit error: An interrupt signal of 2 msis generated.

Replace the ECG control board.

01 Input unit error: There is no response to thehost.

Replace the ECG control board.

02 Input unit error: Communication protocolerror.

Replace the ECG control board.

03 4 bit CPU error: Initialization error. Replace the ECG control board.

04 4 bit CPU error: “No response” error. Replace the ECG control board.

05 A key on the key board is short-circuited. Replace the key board.

06 RTC error: No interrupt signal of 125 ms. Replace the ECG control board.

07 RTC error: Incorrect data in SRAM. Replace the ECG control board.

09 The lithium battery to back up the date andtime and all system settings is completelydischarged. The system settings other thanthe items described in the following noteare returned to the factory initial settings.

Replace the ECG control board. Thelithium battery is in the real time clock ICon the ECG control board. The date andtime is reset to January 1, 1980.

10 Bus error. Replace the ECG control board.

11 Address error. Replace the ECG control board.

3. TROUBLESHOOTING AND SYSTEM ERROR MESSAGE

3.8 Service Manual ECG-9620

NOTE••••• “Error 05” also appears when any key on the operation panel is

pressed and held down.

••••• When “Error 08” appears, the following settings are not reset to

the factory initial settings even if the instrument is initialized.

— display language — hum filter

— hospital name — direct/modem connection

— recording resolution setting — elapsed time

— local language font — saved ECG data

Error No. Meaning Corrective Action

12 Illegal command. Replace the ECG control board.

13 Zero division error. Replace the ECG control board.

14 Power off time out. Replace the ECG control board.

15 EEPROM error: This occurs due to theEEPROM check error, installed languageerror or communication error between thehost and EEPROM.

Replace the ECG control board.

16 Local language flash memory error. Replace the ECG control board.

17 ECG model error. Replace the ECG control board.

18 Local language is not installed. Install the local language.

19 Local language is not installed. Install the local language.

Error in memory area for local language. Re-install the local language.

20 Local language text file version does notmatch the ECG software version.

Install the local language text file which isthe same version as the ECG software.

21 ECG interpretation error (Time over). Check the input waveforms. If any noiseis superimposed on the waveforms, findand eliminate the cause. If no noise issuperimposed on the waveform, replace theECG control board.

22 The entered information does not matchthe data in the flash memory.

Replace the ECG control board.

27 Program version error. The program isupdated.

Turn the power off, then on and check thatthe ECG waveforms are displayedcorrectly.

System Test

Calling up the System Test Screen

Test Level 1: Power on with pressing and holding the FEED/MARK key [8].

Test Level 2: Power on while pressing and holding the FEED/MARK key [8] andAUTO/MANUAL key [CLR].

The list of the system test items is printed. You can start each system test by entering thenumber with a key switch.

Test No. Page Item MemoT1-00 4.7 Demonstration ECG analysis is available.T1-01 4.8 Recorder Slant lines

Characters H and XGridPaper speed scales (10, 12.5, 25 and 50 mm/s)

T1-05 4.17 Input unit (analog)(Check result is printed)

Lead off detection and patient cable check

T1-06 4.18 Calibration(Check result is printed)

Sensitivity, TC for lead I, II V1 to V6Digital processing circuit

T1-04 4.15 LCD/LEDT1-02 4.12 Key

(Check result is printed)T1-07 4.19 Communication For transferring ECG data filesT2-02 4.25 Thermal head check and

adjustmentECG-9620: Enter the number according to the

resistance (T2-41 to 49)

ReferenceSystem Setting: Power on while pressing and holding the COPY/CAL key [0].

―――― Q & A ――――

(ECG-9010/9020/9110/9130)

1. The life time of the battery (LCT-1912ANK/12V1.9Ah)

• The capacity of the battery will be half by discharging and charging 300 times. Although it depends on frequency

in use of the doctor, the life time of the battery is about 1 year. Also replace the battery when it cannot last for 15

minutes during battery operation at the temperature between 20 and 30 degrees.

2. The life time of the thermal head

• Replace the thermal head after 30 km recording. For example, if the paper is used 60 cm (6 channel auto

recording + analysis + dominant) per one patient, it can be record for about 5000 patients.

3. The life time of the LCD backlight (ECG-9020/9130)

• The brightness of the backlight may be half by using 10000 hours. In other word, it may last 6 years by using 6

hours a day and 5 days a week.

4. The life time of the lithium battery.

• Replace the lithium battery on the ECG control board when the No. 08 or 09 system error message appears or after

the lithium battery is used for 7 years. The life time of the lithium battery is about 7 years. The parts number and

the cord number is as follows.

NK parts number: BR2032/1F2

NK cord number: 3907653

5. We know that the ECG-9010/9020/9110/9130 does not function stress test. But we want to examine the stress

test on the manual mode by using those ECG. Do you have any recommended patient cable to use in the stress

test.

• As you know already, the ECG-9010/9020/9110/9130 does not function stress test. But we are preparing the patient

cable for the disposable electrode. You can specify the lead length of limb and chest. Please see the attached

paper.

6. During AC operation without battery, the power was turned off. And the «system error 22» was printed. How

do I have to do?

• Regarding ECG-9010 and 9020, it occurred because the condenser does not include on the control board. Please

confirm the S/N of the ECG. The following S/N is the already measured. There is not problem regarding ECG-

9110 and ECG-9130.

ECG-9010: 00312 or later

ECG-9020: 00182 or later

However even if the ECG-9010, 9020, 9110 or 9130 is operated AC power, use the battery necessary in order to

prevent the trouble. Because battery works as a condenser. If the «error 22» occurs, the ECG must be returned to

Nihon Kohden for repair.

ts2126

The ECG-9010K/9020K cardiograph can operate on both battery power and AC power. The battery power is also used for sudden power loss when the cardiograph operates on AC power. When the battery is not installed in the cardiograph and operates on AC power, if the AC power is not supplied suddenly, such as AC power down or AC power cord is unplugged, the amplifier settings saved in the EPROM are lost. After this, every time when the power is turned on, the cardiograph automatically prints the system information with “Error 22” and enters to the System test mode to be adjusted the lost amplifier settings. The repair can only be performed in the factory of Nihon Kohden.

ts2126

We know that the ECG-9010/9020/9110/9130 does not function stress test. But we want to examine the stress test on the manual mode by using those ECG. Do you have any recommended patient cable to use in the stress • As you know already, the ECG-9010/9020/9110/9130 does not function stress test. But we are preparing the patient cable for the disposable

ts2126

electrode. You can specify the lead length of limb and chest. Please see the attached

7. Regarding ECG-9010, 9020, 9110 and 9130, the analysis age is more than 3 years old. Cannot you analyze

under the age of 3?

• We Nihon Kohden analyze the ECG data by getting the ECG data from certain hospital to estimate by age standard.

However we cannot estimate the data enough under the age of 3 because the data is a very few. So we cannot

warranty the analysis result about under age of 3.

8. Can the ECG-9010, 9020, 9110 and 9130 be connected with the mechano-cardiograph amplifier?

• The mechanocardiograph is as follows.

Model name: AK-101E

Connection cable: YZ-014H8

The ECG-9010 and 9020 has one terminal of analog output. The ECG-9110 and 9130 have two analog output

terminals.

9. Regarding ECG-9020, the ID number of the patient is named automatically. Can we modify the ID number or

patient information?

• The ID number of the patient cannot be modified on the ECG-9020. If the saved data on the ECG-9020 transfer to

the PC, the data can be modified freely.

10. We select the «Local language» in the system setting without installation of the local language. The «system

error 18″ is printed out when turn the power on.

• The phenomenon is no problem. If you want to select the «local language» in the system setting, please install the

local language. Otherwise you have to select the «English» in the system setting.

11. The doctor wants to save the ECG data without recording.

• When the ECG data can be saved without recording, the doctor has to judge the data only by seeing display. We

cannot hold responsible if the saved data is very noisy when recording later. That is way we cannot standardize

the function.

12. Can the ECG-9130 use the PCMCIA card which come onto the market?

• The memory card can be used for the ECG-9130 is only QM-040V. The access timing of the memory card which

is produced by SUNDISK Corporation has recently been changed without report. Therefore for ECG-9130 and

ECG-9320 you can only use the memory card which is produced by Nihon Kohden. Otherwise we cannot

guarantee accurate function.

13. We have the ECG-9130 but the ECG cannot save the data even if using the PCMCIA card, QM-040V. How do

we have to operate to save the ECG data?

• Please confirm the S/N of the ECG you have. If the S/N of the ECG is under 00240, the ECG has to be upgraded.

Please refer to the attached material and contact the sales person in charge. We will measure as soon as possible.

14. Regarding ECG-9020 and ECG-9130, the data can be transferred by using the modem. In the future, can the

data be transferred to the fax.

• We are sorry that we have no plan at the present.

1/1

How to upgrade

Figure 5

Figure 1

Figure 2

Figure 3

Figure 4

Caution:The board can be damaged by staticelectricity.Prepare the upgraded ROM on ananti-static. (Refer to Fig. 3)

1. Record the list of the system set before

the replacement.

2. Open the back cover with a phillips head.

(Refer to Fig. 1)

3. Pull out the ROM board with a pair of

pliers. Be careful not to damage the

board. (Refer to Fig. 2)

4. Put the ROM board on the anti-static

sheet. (Refer to Fig. 3)

5. Insert the upgraded ROM board. (Refer

to Fig. 4)

6. Close the cover with 2 screws. (Refer to

Fig. 5)

7. Turn the power on.

ü At this time the backlight is lit but

nothing is displayed for 5 seconds.

And system error (No. 27) is recorded

automatically with the error sound.

But this is no problem. Do not turn the

power off. The power is turned off

automatically after the recording.

8. Turn the power on and set the system

setting as referring the list recorded at

procedure 1.

After replacement, please return theold ROM board to us immediately,wrapped in an anti-static sheet.

Troubleshooting

Problem1.� The power LED light but there is no display or backlight on the LCD screen.

2.� The instrument does not operate on the battery power.

3.� No key or switch operation.

4.� Only certain electrode lead waveforms are displayed on the screen or noise appears on all

waveforms.

5.� No electrode lead waveforms are displayed on the screen or noise appear on all waveform.

6.� The instrument does not operate on AC power.

7.� Vertical and horizontal strips appear on the LCD screen at contrast intervals.

8.� No sound.

9.� The recorder does not feed the recording paper when the start switch is pressed.

10.� The recording paper is fed but there is no printing.

11.� The paper mark cannot be detected.

12.� The recording paper tracks zigzag or to one side.

1/7

Getting Clear and Accurate ECG Recording

Artifact and Interference

Leakage Current

Figure Leakage Current

If a wire or insulation gets dusty, damp or oily or develops tiny cracks, it is no longer fullyinsulated. This “leaky” insulation provides an unwanted path for a tiny amount of currentbetween the AC power source and ground.

Typical paths for leakage current are:AC wall outlet → floor → bed → PATIENT → patient cable → ECG machine → groundECG machine → patient cable → PATIENT → bed → floor → earth ground

Leakage current is on the order of microvolts so it is too weak for a person to sense.However, leakage current can cause microshock and AC interference (hum) in ECGmeasurement.

To prevent leakage current, do the following steps:1. Connect a metal bed to the (electric) ground.2. Spread a shield sheet beneath the patient.3. Mount an insulator to each leg of the bed.4. Securely connect the ECG unit to the (electric) ground.

2/7

Electrostatic Induction

Figure Electrostatic Induction

Many of us remember how, as children, we rubbed a piece of celluloid against a shirt andthen held it over scraps of paper on a desk. The celluloid attracted the pieces of paperbecause rubbing the celluloid made it electrically charged. Some materials like celluloidare easily charged in this way.This phenomenon is called electrostatic induction and it is the principle by which acapacitor works. An electrically charged material can induce an electrical charge in anearby material, even through the air. In other words, if an insulator separates twoconductors, an electrical charge in one conductor induces an opposite charge in the otherconductor. The symbol of the capacitor represents two plates separated by a thin insulator.

Electric induction can also be found between a indoor wire for a wall light or ceiling andthe human body.

To eliminate electric induction: Place the patient as far from the AC power outlet and AC power line as possible. Connect a metal bed to a ground Insert a shielding sheet between the body of the patient and the bed for insulation.

3/7

Electromagnetic Induction

Figure Electromagnetic Induction

You can demonstrate the phenomenon of electromagnetic induction by winding a wirearound a non-conductive rod and connecting it to a battery and switch. Wind a secondwire around the rod so it doesn’t touch the first wire, and connect the second wire to anammeter. When you turn on the switch, the ammeter needle jumps for a second. Whenyou turn off the switch, the ammeter needle jumps again.

A constantly changing electrical current produces a constantly changing magnetic fieldaround it. Conversely, a constantly changing magnetic field induces a constantlychanging electrical current in any nearby conductor. (A constant magnetic field or DCcurrent does not cause electromagnetic induction.) Electromagnetic induction is theprinciple behind coils and transformers. [This principle also allows such things asgenerators, alternators and windmills which involve electricity and mechanically turnedmagnets.]

The 50/60 Hz AC current in a power cord induces a changing electromagnetic field aroundit. If another conductor, such as a patient cable, runs parallel to the AC cord, theelectromagnetic field induces a weak 50/60 Hz current in the patient cable. This results in50/60 Hz noise mixed with the ECG signal—AC hum.

4/7

Electrodes and Skin Contact Impedance

Figure Electrode and Contact Resistance

When measuring the ECG waveforms, skin preparation of the electrode attachment sites isvery important. Failure to do this can cause impedance between the surface and theelectrode which will result in noise.

To prepare the skin, thoroughly clean it with cotton soaked in alcohol. Next, apply a thincoat of Cardiocream to the surface of the electrodes and the area where they are to beplaced on the skin.

Contact resistance on the surface of the skin can reach as high a level as 100 k ohm if theskin is dry. However, contact resistance can be reduced to the less than 10 k ohm if theskin preparation described above is carefully followed.

5/7

Electrodes and Polarized Voltage

Figure electrode and Polarized Voltage

The combination of electrode, cream and skin forms a kind of battery cell which cangenerate a polarized voltage of up to 100 mV. When polarized voltage is high, it causesbaseline fluctuations.

To prevent polarized voltage: Use good quality electrodes e. g. silver chloride electrodes. Clean the electrodes thoroughly to keep the surfaces smooth and even. Do not use abrasive cleanser pr steel wool to clean electrodes.

6/7

EMC (Electromagnetic Interference)

The following describes some common interference sources and remedial actions:

• The equipment and/or system is not grounded:For AC powered equipment and/or system. use the provided grounding cable to connectthe equipotential terminal of the equipment to the grounding system of the facility.

• Strong electromagnetic interference from a nearby emitter source such as an authorizedradio station or cellular phone:Install the equipment and/or system at another location if it is interfered by an emittersource such as an authorized radio station. Keep the emitter source such as cellularphone away from the equipment and/or system.

• Radio-frequency interference from other equipment through the AC power supply ofthe equipment and/or system:Identify the cause of this interference and if possible remove this interference source.If this is not possible, use a different power supply.

• Effect of direct or indirect electrostatic discharge:Make sure all users and patients in contact with the equipment and/or system are freefrom direct or indirect electrostatic energy before using it. A humid room can helplessen this problem.

If the above suggested remedial actions do not solve the problem. consult your NihonKohden Corporation subsidiary or distributor for additional suggestions.

7/7

Location of the Instrument

The electrocardiograph is an instrument to record a very small electric potential change.Ideally, it is recommended that the instrument is installed in a shielded room whichprovides constant environmental conditions. If this is not possible, the examinationlocation should be carefully selected as follows.

The room should be equipped with a local 3-prong outlet where the third contact isgrounded.

The instrument should not be installed near a power line, dynamo or motor which haselectromagnetic induction.

The instrument should not be installed near equipment with a high power consumption,such as large-scale X-ray equipment.

A room adjacent to an area which has electrosurgical units or RF therapeuticequipment should be avoided.

A room with no excessive noise, vibration, sunshine, high-humidity or water splashesshould be selected.

Check before Turning Power On

1. Is the instrument grounded properly Is the grounding pin of the power cord broken or damaged ? Is the AC wall outlet properly grounded ?

2. Is the power cord connected properly ? Is the power cord plugged in to the outlet firmly ? Is the power cord free from entanglement with other cords ?

3. Are the patient cables connected properly ? Are the patient cables sufficiently separated from the power cord ? Are the patient cable tips firmly connected to the correct electrodes ?

4. Have the electrodes been properly prepared ? Has the skin been cleaned of oil and prepared with a high quality ECG electrolyte

cream ? Are electrodes (especially chest electrodes) free from contact with each other ? Are the electrodes free of corrosion, pit marks and scratches ?

5. Is the sufficient recording paper in the instrument ?

6. Is the patient comfortable ? Is the bed sufficiently wide and long to support the patient’s limbs fully ? Is the patient relaxed ? Is the examination room warm ?

When the instrument and the patient are found to be free from improper conditionsaccording to the above checks, turn on the power switch of the instrument.

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Maintenance Information

No. Product ProblemMI-0103R ECG-9130K/P, ECG-9132K RecorderMI-0106 ECG-9320A/KG, ECG-9522A/P BatteryMI-0119 ECG-9130K/P, ECG-9132K Battery charging circuit

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Your Donation Will Be Matched 1-to-1! Can You Chip In?

Dear Patron: Please don’t scroll past this. The Internet Archive is a nonprofit fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, sell user information, or run ads. Instead, we’re powered by online donations averaging about $14. We’d be deeply grateful if you’d join the one in a thousand users that support us financially.

Right now, we have a matching gift campaign that will double the impact of every donation. We understand that not everyone can donate right now, but if you can afford to contribute this Tuesday, we promise it will be put to good use. Our resources are crucial for knowledge lovers everywhere—so if you find all these bits and bytes useful, please pitch in.

Your Donation Will Be Matched! Can You Chip In?
Dear Patron: Please don’t scroll past this. Right now we have a matching gift campaign that will double the impact of every donation. We understand that not everyone can give right now, but if you can afford to contribute this Tuesday, we promise it will be put to good use. If you find all these bits and bytes useful, please pitch in.

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