Oki CX2731MFP Advance User Manual page 291

Symptom
Horizontal lines
and spots
appear
periodically.
White area of
paper is lightly
stained.
Periphery of
letters is
smudged.
MC361/MC561/CX2731 MFP Advanced User's Guide
Cause
If the interval of lines or
spots is about 94 mm (4
inches), the image drum
(the green tube) is damaged
or dirty.
If the interval of lines or
spots is about 42 mm (1.5
inches), foreign materials
may be present on the
image drum unit.
If the interval of lines or
spots is about 87 mm (3.5
inches), the fuser unit is
damaged.
The image drum unit has
been exposed to light.
The paper feed path is dirty.
The paper contains static
electricity.
The paper is too thick.
The toner is low.
The LED heads are dirty.
The paper is unsuitable.
The paper is moist.
291
– Issues: Print Issues
Remedy
Lightly wipe the image
drum with soft tissue
paper.
Replace the image
drum unit if it is
damaged.
Open and close the top
cover, and print again.
Replace the fuser unit.
Place the image drum
unit back into the MFP
and leave it for a few
hours. If it does not
solve the problem,
replace the image
drum unit.
Print a few test copies.
Use paper stored in
proper temperature
and humidity
conditions.
Use thinner paper.
Replace the toner
cartridge.
Wipe the LED heads
with soft tissue paper.
Use recommended
paper.
Replace it with new
paper.