Lexmark 250dn Manuale Utente

Print quality problems

Many print quality problems can be solved by replacing a supply or maintenance item that has reached the end of its
intended life. See the following table to find solutions to print quality problems.

Symptom

Cause

Solution

White lines

• The printhead lens is dirty.
• Either the toner cartridge or the

fuser is defective.

Try the following in the order listed:

1 Clean the printhead lens.

(See Cleaning the printhead lens
on page 91.)

2 Replace the toner cartridge.
3 Replace the fuser

Streaked horizontal lines

The toner cartridge or fuser may be
defective, empty, or worn.

Replace the toner cartridge or fuser

as needed.

Streaked vertical lines

• Toner is smeared before fusing to

the paper.

• The toner cartridge is defective.

• If paper is stiff, try feeding from

another tray or the manual feeder.

• Replace the toner cartridge.

Print irregularities

• Paper has absorbed moisture due

to high humidity.

• Paper that does not meet the printer

specifications is being used.

• The fuser is worn or defective.

• Load paper from a fresh package

into the paper tray.

• Avoid textured paper with rough

finishes.

• Make sure the printer driver paper

type setting matches the type of
paper being used.

• Replace the fuser

To replace the fuser, call a service technician.

†

This setting can be changed using the Local Printer Settings Utility.

ABCDE
ABCDE
ABCDE