Konica Minolta magicolor 4690MF - Manual (Page 252)

Solving Problems with Printing Quality 240
Image
defects. The laser lens is dirty. Clean the laser lens.
A toner cartridge may
be leaking.
Remove the toner cartridges and
check for damage. If it is damaged,
replace it.
A toner cartridge may
be defective. Remove the toner cartridge with the
color causing the abnormal image.
Replace it with a new toner cartridge.
One or more of the
imaging units may be
defective. Remove the imaging units and check
for damage. If it is damaged, replace it.
Lateral lines
or bands
appear on
image. The machine is not
level. Place the machine on a flat, hard, level
surface.
The media path is
dirty with toner. Print several sheets and the excess
toner should disappear.
One or more of the
toner cartridges may
be defective. Remove the toner cartridges and
check for damage. If it is damaged,
replace it.
One or more of the
imaging units is
defective. Remove the imaging units and check
for damage. If it is damaged, replace it.
Colors look
drastically
wrong. One or more of the
toner cartridges may
be defective. Remove the toner cartridges and verify
that the toner is distributed evenly on
each cartridge roller, and reinstall the
toner cartridges.
Colors are
not register-
ing properly;
colors are
mixed or
have
page-to-pag
e variation. The engine cover is
not properly closed. Make sure that the engine cover is
closed.
One or more of the
imaging units is not
correctly seated. Remove the imaging units and check
for damage. If it is damaged, replace it.
One or more of the
toner cartridges may
be defective. Remove the toner cartridges and
check for damage. If it is damaged,
replace it.
The media is moist
from humidity. Remove the moist media and replace it
with new, dry media.
Symptom Cause Solution