Lexmark 5021-0XX manual Uneven density right and left, Photodeveloper cartridge

5021-0XX

Uneven density (right and left)

Optical density is different between right and left side of printed image.

	Problem area	Action
1	Rear cover assembly	Open rear cover assembly and
		reclose, ensuring that both sides
		properly latch. If rear cover assembly
		will not properly latch, ensure that
		white door actuators located at top of
		rear cover assembly are not
		damaged. If damaged, replace.
		These items are part of parts packet.
		If actuators are not damaged, and
		door will still not latch, replace rear
		cover assembly. See “Rear cover
		assembly removal” on page 4-22.
2	Transfer roller	Transfer roller is not properly
		installed. Remove transfer roller and
		reinstall. See “Transfer roller
		removal” on page 4-8. Ensure
		transfer roller bias pole is touching
		spring contact on left side (as viewed
		from front of printer) of roller.
3	Laser unit assembly	Dust-proof glass of laser unit is
	(printhead)	smeared with toner or foreign
		particles. Clean glass:
		• Remove toner cartridges and
		photodeveloper cartridge. See
		“Photodeveloper cartridge
		removal” on page 4-11.
		• Open glass cover.
		• Clean glass.
		There are foreign particles adhering
		to laser beam opening of printhead.
		Clean laser beam opening.
4	Toner cartridge	Toner cartridge has insufficient
		amount of toner. Replace toner
		cartridge.
5	Photodeveloper cartridge	Replace faulty photodeveloper
		cartridge. See “Photodeveloper
		cartridge removal” on page 4-11.

Diagnostic information 2-127