Citizen Systems CBM-710/720 service manual How to the Upper Cover and Rear Cover

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CBM-710/720 Service Manual

1.How to the Upper Cover and Rear Cover

1)Unfasten 4 screws (M3 x 6) as shown in the figure and lift the upper cover upward, while disconnecting the connector.

2)Unfasten 4 screws (M3 x 6) at both sides and remove the rear cover.

Upper Cover

Connector

Rear Cover

2

Image 4

Contents DOT Matrix Printer Contents Chapter Printer Disassebly and Assembly How to the Upper Cover and Rear Cover How to Remove the Printer Mechanism How to Remove the Control BoardHow to Remove the Power Board and AC Power Unit How to Remove the Auto Cutter Unit How to Remove the Operation Panel Board and PE Sensor BoardChapter Circuit Description Block Diagram OutlineCPU Peripheral Circuits CPU and ROM/RAM CircuitPower Failure Interrupt Circuit and Initial Resetting Printer Control Circuit Printer Control CircuitCutter Control Circuit Normal Reverse StopInterface with Operation Panel Operation Panel CircuitPaper End Sensor Circuit Paper End Sensor CircuitParallel Interface Circuit STBParallel Interface Circuit Serial Interface Circuit Serial Interface Circuit Diagram RS422A Interface Circuit RS422A Interface CircuitPower Circuit Power Supply CircuitChapter 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 Parts List Exploded View CBM-710/720Ref. 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 Auto Cutter AC-2/AC-3 AC-2 AC-3AC-2 AC-3 Winder AW-2 AW-2