Citizen Systems service manual Control Board Assy RS232C CBM-710/720

Models: CBM-710/720

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CBM-710/720 Service Manual

PARTS LIST

 

 

 

 

5. Control Board Assy : RS232C

 

 

CBM-710/720

 

 

 

 

 

Ref. No.

Parts No.

Description

Q’ty

Remarks

IC

1

E 104-200

LSI (CPU)

M50734SP

1

 

2

E 107-130

LSI (PROM)

M5L27128K

1

 

3

E 104-220

LSI (RAM)

uPD4464C-15L

1

 

4

E 2010170

IC (TTL)

SN74LS373N

1

 

5

E 2010220

IC (TTL)

SN74LS240N

1

 

6

E 2010230

IC (TTL)

SN74LS375N

1

 

7

E 2010240

IC (TTL)

SN74LS139N

1

8, 13

E 2010250

IC (TTL)

SN74LS04N

1

 

9

E 2010260

IC (TTL)

SN741S11N

1

 

10

E 2010200

IC (TTL)

SN7406N

1

 

11

E 2010270

IC (TTL)

SN74LS14N

1

 

12

E 202-610

IC

uPC393C

1

14, 15

E 2010040

IC (CMOS)

MAX232CPE

2

TA

1

E 390-100

Tr. Array

HA13408

1

 

2

E 390-120

Tr. Array

STA403A

1

TR

1

E 319-117

Transistor

2SA1175HF

1

 

2-5

E 359-278

Transistor

2SC2785HF

11

 

8,9

 

 

 

 

12,13

 

 

 

 

101-103

 

 

 

 

6,10

E 327-030

Transistor

2SB731L

2

 

7,11

E 360-020

Transistor

2SD809(1)L

2

ZD

1

E 403-060

Zener Diode

RD3. 0EL1

1

D

1-3

E 400-010

Diode

IS1588

3

PHC

1

E 391-080

Photocupprer

PC837

1

RA

1,5

E 3103-140

Re. Array

SR-8RA-10K

2

 

2,3

E 3103-170

Re. Array

SR-9RA-10K

2

 

4

E 3013-090

Re. Array

SR-4RB-1K

1

47

Page 49
Image 49
Citizen Systems service manual Control Board Assy RS232C CBM-710/720