Lexmark 4076-0XX Operator Panel Service Check, Fru Or Procedure, Action, Diagnostic Information

4076-0XX

Operator Panel Service Check

	FRU OR PROCEDURE	ACTION
1	Power Supply	Disconnect J11 from the system
		board and check the following volt-
		ages on the power supply cable:
		J11-1 to GND = +5V dc
		J11-3 to GND = +24V dc
		If you do not have correct voltage,
		replace the power supply. Be sure to
		unplug the machine before you recon-
		nect the power supply to the system
		board.
2	System Board	Turn the printer on. Check for +5 V dc
		at test point CE/TP near the operator
		panel connector on the system board
3	Operator Panel Cover	The operator panel cover actuates
		the operator panel sensor on the
		operator panel. Check the cover for
		any broken parts. Check the operator
		panel sensor for dirt.
4	Operator Panel Card	Check the operator panel cable for
	Operator Panel Cable	continuity. If the cable is good,
		replace the operator panel. If the
		symptom remains, replace the sys-
		tem board.

Diagnostic Information 13