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Solving print quality problems
145
Troubleshooting
Dark Lines A toner cartridge, a
photodeveloper, or the transfer
belt is defective.
If the problem is on the front (print side) of
the page:
1 Replace the color cartridge causing the
line.
2 If you still have the problem, replace the
photodeveloper (black alone or all other
colors at once).
If the problem is on the back of the page,
replace the transfer belt.
Light colored line,
white line, or wrong
colored line
The LEDs are dirty. See Cleaning the LEDs.
Streaked horizontal
lines
A toner cartridge, a
photodeveloper, the transfer
belt, or fuser may be defective,
empty, or worn.
Replace the cartridge, photodeveloper
(black alone or all other colors at once),
transfer belt, 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.
• Replace the color cartridge causing the
streaks.
Print irregularities • Paper has absorbed
moisture due to high
humidity.
• You are using paper that
does not meet the printer
specifications.
• A photodeveloper, the
transfer belt or the fuser is
worn or defective.
• Load paper from a fresh package in the
paper tray.
• Avoid textured paper with rough finishes.
• Make sure the printer’s paper type and
paper weight settings match the type of
paper you are using.
• Replace photodeveloper (black alone or
all other colors at once), the transfer belt
or the fuser.
Symptom Cause Solution
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