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Citizen Systems
CBM-710/720
service manual
Parallel Interface Circuit
Models:
CBM-710/720
1
17
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69 pages
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Troubleshooting
Parts list
Block Diagram
Maintenance
Disassembly/Assembly
Power Circuit
Cam Switch Cutter Gear
Page 17
Image 17
CBM-710/720
Service Manual
Vcc
R15 33k
IC1 50734SP
IC10
7406
IC137406
33k
Ω
RA5
12-
CN3
16P
CN2
Fig.
7-2.
Parallel Interface Circuit
15
Page 16
Page 18
Page 17
Image 17
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Contents
DOT Matrix Printer
Contents
Chapter Printer Disassebly and Assembly
How to the Upper Cover and Rear Cover
How to Remove the Control Board
How to Remove the Printer Mechanism
How to Remove the Power Board and AC Power Unit
How to Remove the Operation Panel Board and PE Sensor Board
How to Remove the Auto Cutter Unit
Chapter Circuit Description
Outline
Block Diagram
CPU and ROM/RAM Circuit
CPU Peripheral Circuits
Power Failure Interrupt Circuit and Initial Resetting
Printer Control Circuit
Printer Control Circuit
Normal Reverse Stop
Cutter Control Circuit
Operation Panel Circuit
Interface with Operation Panel
Paper End Sensor Circuit
Paper End Sensor Circuit
STB
Parallel Interface Circuit
Parallel Interface Circuit
Serial Interface Circuit
Serial Interface Circuit Diagram
RS422A Interface Circuit
RS422A Interface Circuit
Power Supply Circuit
Power Circuit
Chapter Auto Cutter
Maintenance and Handling
Mechanism and Principle of Operation
Cam Switch Cutter Gear
Repairing Troubleshooting
Page
Disassembly/Assembly
Page
Chapter Circuit Diagram
Power Supply Circuit Diagram CBM710/720-001-00
Noise Filter Circuit Diagram CBM710/720-002-00
Paper End Sensor Circuit Diagram CBM710/720-004-00
Circuit Diagram Parallel
Circuit Diagram RS232C
CBM710/720-008-00
Chapter Parts List
Exploded View CBM-710/720
Parts List
Ref. No Parts No Description
CBM-710,720
CBM-710
CBM-72037
Block Diagram CBM-710/720
Block Diagram
Power Supply Unit CBM-710/720
PC Board
Noise Filter Unit CBM-710/720
Parts Position Noise Filter Unit
Control Board Assy RS232C CBM-710/720
Parts List Control Board Assy RS232C
OSC
Parts Position Control Board Unit RS232C
Control Board Assy Parallel CBM-710/720
Parts List Control Board Assy Parallel
Parts List Control Board Assy Parallel
Parts Position Control Board Unit Parallel
Control Board Assy RS422A CBM-710/720
Parts List Control Board Assy RS422A
OSC
Parts Position Control Board Unit RS422A
Operation Panel Unit
Parts Position Operation Panel Unit
Parts Position PE Detector Unit
OP Junction Block
AC-2 AC-3
Auto Cutter AC-2/AC-3
AC-2
AC-3
Winder AW-2
AW-2
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