Lexmark 5016-001 manual Background Service Check, Go to the Erase Lamp Service Check on

5016-001

Background Service Check

Note: Some background problems can be caused by rough papers. Slick or coated papers may also cause background. Some problems occur with printers that run a large amount of graphics in a humid environment.

•Try an ITM assembly.

•Try a new toner cartridge of the background color.

	FRU	Action
1	Erase Lamps	Go to the “Erase Lamp Service Check” on
		page 2-50.
2	Printhead	The printhead cannot be cleaned. If all other
		attempts at correcting a background problem
		fail, replace the printhead.
3	High Voltage	Check the high voltage contacts in grid block 1
	Contacts	and 2 to ensure they are clean, not bent,
		deformed or pitted. If incorrect, replace the
		failing grid block assembly
4	Grid Block ASM 2	Be sure the HVPS is correctly installed and
	HVPS	securely mounted to the HVPS mounting
		bracket and grid block assemblies. If correct,
		remove the HVPS and be sure the high voltage
		contacts align with the contacts on the HVPS.
		Also look for any signs of pitting or damage.
5	Engine Board	If background problems continue:
		• Replace the HVPS.
		• If this does not fix the problem, replace grid
		assembly 1, and assembly 1.

2-82Service Manual