Lexmark 4069-XXX manual XXX Print Quality All Black, Print Quality Blank

4069-XXX

Print Quality - All Black Page

Service Tip: An all black page is generally caused by a problem in the high voltage system or an incorrect high voltage in the printing process resulting in toner development on the entire photoconductor drum.

	FRU	Action
1	High Voltage Contacts	Check the high voltage contacts on
		the right side frame to ensure they fit
		securely and are not pitted,
		contaminated or damaged. If
		incorrect, replace the contact with
		one from the HV contact kit.
		Screws are included to attach the
		contacts to the right side frame in the
		HV contact kit.
3	Charge Roll Conductive	Check to make sure the charge roll
	Bushing	bushing is correctly installed in the
		right charge roll arm.
2	HVPS	Check the voltages on J10-1 thru
		J10-8. If incorrect, replace the
		engine board.
3	HVPS Cable	Check the continuity of the HVPS
	(Part of Front	cable. If incorrect, replace the cable
	Harness Cable)	assembly. If correct, replace the
	Engine Board	engine board.

Print Quality - Blank Page

	FRU	Action
1	Print Cartridge	Check the print cartridge for any
		signs of damage, especially the PC
		drum contact on the cartridge.

Diagnostic Information 2-93