Nihon-Kohden ECG-9020 Service manual

1. GENERAL

ECG-9020K
Electrocardiograph

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 Battery Terminal Assy

RK-0009 ECG-9020K Top Casing Assy

SC-903D Power Unit

UT-23561 ECG Control Board

UT-2357 Flash ROM Board

(Optional)

VL-0001 LCD Assy

KD-103E Cart

KH-801E Patient 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

••

Replaceable Parts List”.

1.12 Service Manual ECG-9010/9020 Rev A

Composition

ECG-9620 Standard Components

1. GENERAL

ECG-9620L
ECG-9620M
ECG-9620N
ECG-9620P
ECG-9620S
ECG-9620T
ECG-9620U

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

Options

UTC-0008 Power board

KD-103E Cart

KH-801E Patient Cable Hanger

· 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-9620 1.17

Location

1. GENERAL

Motor Assy

Speaker Assy

ECG Control Board

Thermal Head Assy

LCD Assy (for ECG-9020K only)

Flash ROM Board

Inverter Board
(for ECG-9020K
only)

Pow er Unit

Service Manual ECG-9010/9020 Rev A 1.13

1. GENERAL

Location

Thermal Head Assy

Buzzer

Motor Assy

LCD

Ke y board

ECG control board

Transfer Assy

Power board

1.18 Service Manual ECG-9620

1. GENERAL

Block Diagram

NOTE

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

AC
source

Piezo-electric
buzzer

Motor, Motor sensor,
Mark sensor

Membrane key

LCD module

2 pin

5 pin

Inverter board

Thermal head

CN11 (3pin)

Po wer Unit (SC-903D)

CNA011

CNA012

CNA015

CNA013

CN31 (16pin)

CNJ032 (2pin)

CNJ036 (12pin)

CNJ033 (40pin)

CNJ012 (12pin)

CNJ013 (6pin)

CNJ011 (12pin)

CN021
(30pin)

CN51 (4pin)

Flash ROM Board

ECG Control Board

(UT-23561)

CNJ035 (30pin)

(UT-2357)

CNJ011 (80pin)

CNJ021 (80pin)

CNJ031 (D-SUB 9pin)

CNJ043 (mini jack)

CNJ041 (mini jack)

CNJ091 (D-SUB15pin)

SIO

EXT-IN

CRO

Patient Input

Battery

CNA014

1.14 Service Manual ECG-9010/9020 Rev A

ECG Control board

ECG input
connector

EXT input Amp/
A/D converter

RS232C driver

CRO Amp/
A/D converter

Flash ROM
board 2 MB

ROM

DRAM

A/D

ROM
system software

GA

Isolater

Port

CPU I/F

ECG I/F LCD control

RTC

Backup batttery

32 bit CPU

Flash ROM
256KB
Data filing

Gate array

Flash ROM
1 MB

Font,
Local langrage

LCD module Inverter board

Video RAM
16 KB

Sound I/F

Motor assy

Paper senser

Buffer RAM 8 KB
for thermal head

Thermal head

Power unit

AC input

Operation panel

Battery

Battery charger

Switching
regulator

4 bit CPU

Battery voltage
detection

AC/DC
selecter

Thermal head temperature detection

DC/DC
converter

Switching
regulator

Charge
pump

+5 V
+12 V

+24 V to Thermal head

Paper/paper
mark detection

Block Diagram

5. BOARD/UNIT DESCRIPTION

Buzzer

Motor

Motor sensor

Paper sensor

Thermal head

CNJ101 (34 pin)
Key board

CNJ201 (12 pin)

LCD

Patient cable connector

CNA011

CNA012

CNA013

CNJ021 (80 pin)

CNJ032 (2 pin)

CNJ036 (10 pin)

CNJ011 (16 pin)

CNJ033 (24 pin)

CNJ031 (9 pin)

SIO connector

CNJ043
(miniature plug)

External input connector

CNJ041
(miniature plug)

CRO output connector

ECG control board

CNJ091 (D-sub 15 pin)

Battery
(SB-901D)

CNJ035 (30 pin)

CNJ201 (30 pin)

Power board

CNJ102 (3 pin)

CNA014

CNJ101
(2 pin)

Power
transformer unit

AC socket

Service Manual ECG-9620 5.1

Operation BD

AC INPUT

LCD

320x240

TRANS

SW

ECG control BD

Lead Fail
Detection

Pace Marker

Detection

12V Reg

16bits CPU

A/D Conv

4bits CPU

PWM Control

Gate Arry

EEPROM

DC/DC conv

DC/DC conv

+12V,-12V
+2.5V,-2.5V

5V

24V

12V

TRANS

T.H 256 Kbits SRAM

AC-DC Conv

Contrast Control

Main CPU

2 MB FlashROM

Data Files
System Setting

16 MB FlashROM

Program
Font

16 Mbits DRAM

CLOCK RTC

Gate Arry

DC/DC Conv

+8V,-8V

A/D Conv
Ext In Amp

CRO AMP

RS232C

Speaker AMP

Paper Sensor

Motor Sensor

SPEAKER

+

A

-

MOTOR

Charge

Power BD

Control

12V

LCD 256 Kbits SRAM

Thermal head

24V

R

L

F

C1

C2

C6

I

II

R1R1R1

C1

C2

C6

I = L - R
II = F - R
III = II - I
aVR = I + II/2
aVL = 2I - II/2
aVF = 2II + I/2

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 ca ble se per ately; we can only provide it as part of a complete Speaker assy. Refer to

“Speaker Assy” in Section 8.

1. GENERAL

CNA011

CNA013

CNA012

CNA015

CNA014

Service Manual ECG-9010/9020 Rev A 1.15