Lexmark 920 manual See Cleaning the LEDs

Troubleshooting

Symptom Cause Solution

Dark Lines		A toner cartridge, a		If the problem is on the front (print side) of
		photodeveloper, or the transfer		the page:
	ABCDE	belt is defective.		1 Replace the color cartridge causing the
				line.
	ABCDE			2 If you still have the problem, replace the
				photodeveloper (black alone or all other
	ABCDE			colors at once).
				If the problem is on the back of the page,
				replace the transfer belt.
Light colored line,		The LEDs are dirty.		See Cleaning the LEDs.
white line, or wrong
colored line	ABCDE
	ABCDE
Streaked horizontal		A toner cartridge, a		Replace the cartridge, photodeveloper
lines		photodeveloper, the transfer		(black alone or all other colors at once),
	ABCDE	belt, or fuser may be defective,		transfer belt, or fuser as needed.
		empty, or worn.
	ABCDE
	ABCDE
Streaked vertical lines		• Toner is smeared before		• If paper is stiff, try feeding from another
			fusing to the paper.	tray.
	ABCDE	• The toner cartridge is		• Replace the color cartridge causing the
			defective.	streaks.
	ABCDE
	ABCDE
Print irregularities		•	Paper has absorbed	• Load paper from a fresh package in the
			moisture due to high	paper tray.
			humidity.	• Avoid textured paper with rough finishes.
ABCDE		• You are using paper that		• Make sure the printer’s paper type and
			does not meet the printer	paper weight settings match the type of
			specifications.	paper you are using.
ABCDE		•	A photodeveloper, the	• Replace photodeveloper (black alone or
			transfer belt or the fuser is	all other colors at once), the transfer belt
ABCDE			worn or defective.	or the fuser.

Solving print quality problems

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