Lexmark 5016-001 manual Unit S3

5016-001

	FRU	Action
3	Paper Pass	Check the voltages on the duplex rear unit paper
	Sensor	pass sensor on connector CN904.
	Rear Duplex	Pin #		Voltage	Voltage	Voltage
	Unit (S3)	8		Signal	Closed	Open
				DGND	0 V dc	0 V dc
		10		BPSN	+5 V dc	0 V dc
		12		VL	+5 V dc	+5 V dc
		All voltages are approximate values.
		•	If the voltage on pin 12 is incorrect, replace the
			duplex option controller board.
		• If the voltage on pin 10 does not change when
			the sensor is opened and closed, replace the
			FRUs in the following order:
		1. Duplex rear unit paper pass sensor
		2. Duplex option controller board
4	Lower Unit	Check all parts associated with paper movement
	Parts	in the lower duplex unit for correct operation and
		signs of wear, broken parts or binds. Repair or
		replace as necessary.
5	Lower Unit	Check the voltage on the lower duplex unit reverse
	Reverse Motor	motor on CN906.
		Pin #		Voltage	Voltage
				Signal	Static
		1 (Blue)		BPB	+24 V dc
		2 (Brown)		COM	+24 V dc
		3 (Orange)		BP	+24 V dc
		4 (Yellow)		AP	+24 V dc
		5 (Red)		APB	+24 V dc
		All voltages are approximate values.
		•	If the voltages are correct, replace the motor.
		•	If the voltages are incorrect, replace the duplex
			option controller board.

Diagnostic Information 2-129