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

1. GENERAL

Composition

ECG-9620 Standard Components

ECG-9620L

RHC-0004

Record Assy

ECG-9620M

ECG-9620N

RHC-00041

Motor Assy

ECG-9620P

ECG-9620S

UTC-0009

Paper senser board

ECG-9620T

ECG-9620U

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

Options

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

1. GENERAL

Location

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

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

ECG Control Board

Power Unit

Service Manual ECG-9010/9020 Rev A

1.13

1. GENERAL

Location

Thermal Head Assy

Buzzer

Motor Assy

LCD

Transfer Assy

Key board

ECG control board

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.

Piezo-electric

CNA011

CNJ032 (2pin)

buzzer

Motor, Motor sensor,

CNA012

CNJ036 (12pin)

Mark sensor

Membrane key

CNJ033 (40pin)

LCD module

CNJ012 (12pin)

2 pin

5 pin

CNA015

CNJ013 (6pin)

Inverter board

CNA013

Thermal head

CNJ011 (12pin)

CN11 (3pin)

CN31 (16pin)

AC

Power Unit (SC-903D)

CN021

source

(30pin)

Flash ROM Board

(UT-2357)

CNJ011 (80pin)

CNJ021 (80pin)

CNJ031 (D-SUB 9pin)

ECG Control Board (UT-23561)

CNJ043 (mini jack)

CNJ041 (mini jack)

CNJ035 (30pin)

CNJ091 (D-SUB15pin)

SIO

EXT-IN

CRO

Patient Input

CN51 (4pin)

CNA014

Battery

1.14	Service Manual ECG-9010/9020 Rev A

ECG Control board

ECG input							LCD module	Inverter board
		A/D	GA	Isolater
connector
							Video RAM
EXT input Amp/							16 KB
A/D converter
RS232C driver				Port	ECG I/F	LCD control	Sound I/F
								Buffer RAM 8 KB
	ROM			CPU I/F
CRO Amp/						Gate array		for thermal head
A/D converter
Flash ROM
board 2 MB
					32 bit CPU
	DRAM	ROM		RTC	Flash ROM	Flash ROM
		system software			256KB	1 MB
					Data filing	Font,
				Backup batttery		Local langrage
							Motor assy	Paper senser	Thermal head
Operation panel				4 bit CPU				Paper/paper
					Thermal head temperature detection			mark detection
Power unit		Battery	Battery voltage
			detection

Battery charger		DC/DC	Charge	+24 V to Thermal head
		converter	pump
Switching	AC/DC	Switching	+5 V
AC input regulator	selecter	regulator	+12 V

5. BOARD/UNIT DESCRIPTION

Block Diagram

Buzzer							CNJ021 (80 pin) CNJ031 (9 pin)
						CNJ032 (2 pin)			SIO connector
Motor
							CNJ043
					CNA011		(miniature plug)
Motor sensor									External input connector
						CNJ036 (10 pin)
Paper sensor							CNJ041
							(miniature plug)
					CNA012				CRO output connector
Thermal head							CNJ011 (16 pin)
CNJ101 (34 pin)					CNA013
Key board
CNJ201 (12 pin)
						CNJ033 (24 pin)
							ECG control board
	LCD

Patient cable connector

CNJ091 (D-sub 15 pin)

CNJ035 (30 pin)

CNA014

AC socket

CNJ201 (30 pin)

Power

CNJ101

Battery

Power board

transformer unit

(SB-901D)

CNJ102 (3 pin)

(2 pin)

Service Manual ECG-9620

5.1

	Operation BD
	SW							Paper Sensor
		4bits CPU					Gate Arry
								Motor Sensor
	LCD
	320x240
								+
						AC-DC Conv		A
								-
								MOTOR
						Contrast Control
	ECG control BD	16bits CPU	PWM Control	+12V,-12V		12V
				+2.5V,-2.5V
						TRANS
		A/D					DC/DC Conv
		Conv
						Main CPU	+8V,-8V
			Gate Arry				A/D Conv
						2 MB FlashROM	Ext In Amp
	Lead Fail					Data Files	CRO AMP
						System Setting
	Detection					16 MB FlashROM
							RS232C
	Pace Marker					Program
			EEPROM			Font
	Detection
							Speaker AMP
						16 Mbits DRAM
					5V		SPEAKER
			DC/DC conv
						CLOCK RTC
			DC/DC conv		24V
	TRANS
AC INPUT	12V Reg					T.H 256 Kbits SRAM
					12V		24V	Thermal head
						LCD 256 Kbits SRAM
	Charge
	Power BD	Control

R		I
L
		II
F	R1	R1
R1
C1		C1
C2		C2

C6 C6

I = L - R

II = F - R

III = II - I aVR = I + II/2 aVL = 2I - II/2 aVF = 2II + I/2

1. GENERAL

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.

CNA013

CNA012

CNA015

CNA011

CNA014

Service Manual ECG-9010/9020 Rev A

1.15