Lexmark C780, C782 manual To be replaced

Troubleshooting

Symptom Cause Solution

Streaked horizontal lines	The print cartridges, the transfer	Replace the print cartridge, the transfer roller, the
	roller, image transfer unit, or fuser	image transfer unit, or fuser as needed.
	may be defective, empty, or worn.	From the printer operator panel, print the repetitive
ABCDE		defects guide to determine which component needs
		to be replaced.
ABCDE
ABCDE
Streaked vertical lines	• Toner is smeared before fusing	• If paper is stiff, try feeding from another tray.
	to the paper.	• Replace the print cartridge that corresponds to
	• The print cartridge is defective.		the color displayed on the control panel.
ABCDE
ABCDE
ABCDE
Print irregularities	• Paper has absorbed moisture	• Load paper from a fresh package in the paper
	due to high humidity.		tray.
	• You are using paper that does	• Avoid textured paper with rough finishes.
ABCDE	not meet the printer	• Make sure the printer paper type, paper texture,
	• The image transfer unit and		paper you are using.
	specifications.		and paper weight settings match the type of
ABCDE	transfer roller are worn or	• Replace the image transfer unit and transfer
	defective.		roller.
ABCDE	• The fuser is worn or defective.	•	Replace the fuser.

Solving print quality problems

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