Lexmark 5016-001 manual All Black or Color Page Service Check, Fru

5016-001

All Black or Color Page Service Check

Note: An all black or a page that is all one color is generally caused by a problem in the high voltage system, or incorrect high voltage in the printing process resulting in the development of toner on the entire PC drum.

	FRU	Action
1	Print Cartridge	Try a new print cartridge corresponding to the
		color on the page.
2	High Voltage	Check the high voltage contacts in grid block 1
	Contacts	and 2 to ensure they are clean, not bent, deformed
	Grid Block 1	or pitted. If incorrect, replace the failing grid block
	Grid Block 2	assembly.
	HVPS	Be sure the HVPS is correctly installed and
		securely mounted to the HVPS mounting bracket
		and grid block assemblies. If correct, remove the
		HVPS and check to be sure the high voltage
		contacts align with the contacts on the HVPS. Also
		look for signs of pitting or damage.
3	HVPS to Engine	Check the cable for correct installation and
	Board Cable	continuity. If incorrect, replace the cable.
4	Engine Board	Check the cable for proper installation and
	Printhead Cable	continuity.
	Engine Board	•	If the continuity is incorrect, replace the cable.
		•	If incorrect, replace the engine board.
5	Printhead	The printhead can cause this problem, but should
		only be replaced after a new toner cartridge(s) or
		ITM has been replaced.

2-80Service Manual