Oki C9000 Series User Manual page 153

SYMPTOMS
Vertical lines
appear.
Horizontal Lines
and spots appear
periodically.
White area of paper
is lightly stained.
Periphery of the
letters is smudged.
Toner comes off
when it is rubbed.
Glossiness is not
uniform.
POSSIBLE CAUSES
The image drum
cartridge is damaged.
The toner is low.
When the interval is
about 94mm (4in), the
image drum (the green
tube) is damaged or
dirty.
When the interval is
about 42mm (1.5in),
there may be foreign
particles in the image
drum cartridge.
When the interval is
about 87mm (3.5in),
the fuser unit is
damaged.
The image drum
cartridge has been
exposed to light.
Paper contains static.
Too thick paper is used.
The toner is low.
The LED head is dirty.
The thickness and type
of the paper are
incorrectly set.
Recycled paper is used.
The thickness and type
of the paper are
incorrectly set.
C9800 MFP User's Guide> 153
STEPS TO TAKE
Replace the image drum
cartridge.
Replace the toner cartridge.
Wipe it lightly with a soft
cloth. Replace the image
drum cartridge when it is
damaged.
Open/close the top cover,
and print again.
Replace the fuser unit.
Replace the image drum
cartridge if the problem is
not resolved.
Use paper stored in proper
temperature and humidity
conditions.
Use thinner paper.
Replace the toner cartridge.
Wipe the head with LED lens
cleaner or with a soft cloth.
Set the correct value of
[Media Type] and [Media
Weight] in the menu setup
or set one value thicker for
[Media Weight].
Set one value thicker for
[Media Weight] in the menu
setup.
Set the correct value of
[Media Type] and [Media
Weight] in the menu setup
or set one value lighter for
[Media Weight].