Citizen Systems CBM-710/720 service manual Interface with Operation Panel, Operation Panel Circuit

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CBM-710/720 Service Manual

5.Interface with Operation Panel

As shown in Fig. 5-1, the operation panel circuit has the on-line switch and line feed switch. Each switch is connected to CPU input ports and each LED is connected through the driver to CPU output ports.

Control circuit

Operation Panel Circuit

Vcc

LED1	POWER
	R1	CPU
LED2	ON-LINE	P04
	R2	P04
	R2
LED3	ALARM	P05
LED3
	R3
	R3
SW1	ON-LINE	P35
		P35
SW2	FEED	P36
		P36

Fig. 5-1 Operation Panel Circuit

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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 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 Circuit Power 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