Lexmark 4069-XXX manual Check the following voltages at

4069-XXX

	FRU	Action
2	Charge Roll Assembly	Check the charge roll for any signs
	Charge Roll Link Arm	of toner buildup or other
		contamination on the outer edges
		that correspond to the bands on the
		page. Check the charge links and
		arms for proper operation, binds or
		incorrectly mounted counterbalance
		springs. Repair or replace as
		necessary.
3	HVPS	Check the following voltages at
		J10-8 on the engine board:
		Printer Idle
		J10-8 measures 0 V dc
		Printer Printing Test Page
		J10-8 voltage changes from 0 V dc
		to +4 V dc
		If the voltage does not vary, check
		the continuity of line J10-8 in the
		front cable harness. If there is no
		continuity, replace the cable
		harness. If there is continuity,
		replace the HVPS. If this does not
		correct the problem, replace the
		engine board.
		Turn the printer Off and check the
		resistance between J10-7 and
		printer ground. The resistance
		measures approximately 0 ohms. If
		incorrect, make sure the engine
		board is mounted correctly and
		securely grounded. If correct,
		replace the engine board.

Diagnostic Information 2-101