Konica Minolta bizhub C31P User Manual page 231

Symptom
Image
defects.
Lateral lines
or bands
appear on
image.
Colors look
drastically
wrong.
Colors are
not register-
ing properly;
colors are
mixed or
have page-
to-page vari-
ation.
Solving Problems with Printing Quality
Cause
The laser lens is dirty. Clean the laser lens.
A toner cartridge may
be leaking.
A print unit may be
defective.
The printer is not
level.
The media path is
dirty with toner.
One or more of the
print units may be
defective.
One or more of the
print units may be
defective.
One or more of the
toner cartridges may
be low or empty.
The front cover is not
properly closed.
One or more of the
print units may be
defective.
The media is moist
from humidity.
Solution
Remove the toner cartridges and
check them for damage. If one is dam-
aged, replace it.
Remove the print unit with the color
causing the abnormal image.
Replace it with a new print unit.
Place the printer on a flat, hard, level
surface.
Print several sheets and the excess
toner should disappear.
Remove the print units and check them
for damage. If one is damaged,
replace it.
Remove the print units and verify that
the toner is distributed evenly on each
cartridge roller, and reinstall the print
units.
Check the control panel for an
LOW X TONER OUT X
or
necessary, replace the specified toner
cartridge.
Make sure that the printer's front cover
is closed.
Remove the print units and check them
for damage. If one is damaged,
replace it.
Remove the moist media and replace it
with new, dry media.
TONER
message. If
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