OKI C920WT [146/169] Symptoms possible causes steps to take

OKI C920WT [146/169] Symptoms possible causes steps to take
Troubleshooting> 146
Vertical lines
appear.
The image drum
cartridge is damaged.
Replace the image drum
cartridge.
The toner is low. Replace the toner cartridge.
The toner is sticking to
the fuser unit.
Replace the fuser cover
sheet.
Horizontal Lines
and spots appear
periodically.
When the interval is
about 94mm (4in), the
image drum (the green
tube) is damaged or
dirty.
Wipe it lightly with a soft
cloth. Replace the image
drum cartridge when it is
damaged.
When the interval is
about 42mm (1.5in),
there may be foreign
particles in the image
drum cartridge.
Open/close the top cover,
and print again.
When the interval is
about 87mm (3.5in),
the fuser unit is
damaged.
Replace the fuser unit.
The image drum
cartridge has been
exposed to light.
Replace the image drum
cartridge if the problem is
not resolved.
Unprinted spots
appear in the area
about 30mm from
the top edge of the
paper.
Paper being used is too
inelastic.
Enter a blank space on the
first 30mm of the paper,
and print again.
White area of paper
is lightly stained.
Paper contains static. Use paper stored in proper
temperature and humidity
conditions.
Too thick paper is used. Use thinner paper.
The toner is low. Replace the toner cartridge.
The toner is sticking to
the fuser unit roller.
Set 5 sheets of Letter paper
on the MP tray horizontally,
and execute Print
Information > Demo Page >
CleaningPage from the
display panel.
Periphery of the
letters is smudged.
The LED head is dirty. Wipe the head with LED lens
cleaner or with a soft cloth.
SYMPTOMS POSSIBLE CAUSES STEPS TO TAKE

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