Oki MC160 User Manual page 238

Symptom
Abnormal
areas (white,
black, or
color) appear
in a regular
pattern.
Image
defects.
Lateral lines
or bands
appear on
image.
Colors look
drastically
wrong.
9-36
Cause
The print head win-
dow is dirty.
A toner cartridge may
be defective.
The imaging cartridge
may be defective.
The print head win-
dow is dirty.
A toner cartridge may
be leaking.
A toner cartridge may
be defective.
The imaging cartridge
may be defective.
The machine is not
level.
The media path is
dirty with toner.
One or more of the
toner cartridges may
be defective.
The imaging cartridge
may be defective.
One or more of the
toner cartridges may
be defective.
Solving Problems with Printing Quality
Solution
Clean the print head window.
Remove the toner cartridges with the
color causing the abnormal image.
Replace it with a new toner cartridge.
Remove the imaging cartridge and
check for damage. If it is damaged,
replace it.
Clean the print head window.
Remove the toner cartridges and
check for damage. If it is damaged,
replace it.
Remove the toner cartridge with the
color causing the abnormal image.
Replace it with a new toner cartridge.
Remove the imaging cartridge and
check for damage. If it is damaged,
replace it.
Place the machine on a flat, hard, level
surface.
Print several sheets and the excess
toner should disappear.
Remove the toner cartridges and
check for damage. If it is damaged,
replace it.
Remove the imaging cartridge and
check for damage. If it is damaged,
replace it.
Remove the toner cartridges and verify
that the toner is distributed evenly on
each cartridge roller, and reinstall the
toner cartridges.