Symptom
Cause
Solution
Image defects.
The laser lens is dirty.
Clean the laser lens.
A toner cartridge may be leaking.
Remove the toner cartridges and check them for damage. If
one is damaged, replace it.
A photoconductor unit may be
defective.
Remove the photoconductor unit with the color causing the
abnormal image.
Replace it with a new photoconductor unit.
Lateral lines or
bands appear on
image.
The printer is not level.
Place the printer 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
photoconductor units may be
defective.
Remove the photoconductor units and check them for
damage. If one is damaged, replace it.
Colors look
drastically wrong.
One or more of the
photoconductor units may be
defective.
Remove the photoconductor units and verify that the toner
is distributed evenly on each cartridge roller, and reinstall
the photoconductor units.
One or more of the toner
cartridges may be low or empty.
Check the control panel for an
TONER LOW X
or
REPLACE
TONER X
message. If necessary, replace the specified toner
cartridge.
Colors are not
registering
properly; colors
are mixed or have
page-to-page
variation.
One or more of the
photoconductor units may be
defective.
Remove the photoconductor units and check them for
damage. If one is damaged, replace it.
The media is moist from
humidity.
Remove the moist media and replace it with new, dry media.
The color has a
poor reproduction
or has poor color
density.
One or more of the
photoconductor units may be
defective.
Remove the photoconductor units and check them for
damage. If one is damaged, replace it.
AcuLaser C3900 Series User’s Guide
Troubleshooting
139
