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

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
LED3	ALARM	P05
	R3
SW1	ON-LINE	P35
SW2	FEED	P36

Fig. 5-1 Operation Panel Circuit

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