Konica Minolta Magicolor 7450 User Manual page 201

Symptom
Image
defects.
Lateral lines
or bands
appear on
image.
Colors look
drastically
wrong.
Colors are
not
registering
properly;
colors are
mixed or
have page-
to-page
variation.
Solving Problems with Printing Quality
Cause
The laser lens is dirty. Clean the laser lens.
A toner cartridge may
be leaking.
A imaging unit may
be defective.
The printer is not
level.
The media path is
dirty with toner.
One or more of the
imaging units may be
defective.
One or more of the
imaging units may be
defective.
One or more of the
toner cartridges may
be low or empty.
One or more of the
imaging 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 imaging unit with the color
causing the abnormal image.
Replace it with a new imaging unit.
Place the printer on a flat, hard, level
surface.
Print several sheets and the excess
toner should disappear.
Remove the imaging units and check
them for damage. If one is damaged,
replace it.
Remove the imaging units and verify
that the toner is distributed evenly on
each cartridge roller, and reinstall the
imaging units.
Check the control panel for an
TONER LOW or TONER EMPTY X
message. If necessary, replace the
specified toner cartridge.
Remove the imaging units and check
them for damage. If one is damaged,
replace it.
Remove the moist media and replace it
with new, dry media.
X
187