2-54
Confidential
Horizontal stripes
White vertical streaks on image
<User Check>
• This problem may disappear after printing multiple sheets of paper.
• Refer to
to remove the dirt from the
exposure drum using a cotton applicator.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
Step
Cause
Remedy
1
Dirty charge electrodes
Clean the electrodes of the drum unit and
those of the machine. (Refer to
and
2
Dirt on the exposure drum
Perform drum cleaning.
3
A ground wire or ground plate
installation failure (Grounding
is not performed correctly.)
Retighten the screws of each ground wire or
ground plate. Repair the bend of the tray
ground spring of the paper tray.
(Refer to
.)
4
Scratch or dirt on the fuser
unit
Replace the fuser unit.
5
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
<User Check>
• Check that there is no dust on the toner cartridge.
• Refer to
to remove the dirt from the
exposure drum using a cotton applicator.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
Step
Cause
Remedy
1
Dirt on the exposure drum
Perform drum cleaning.
2
Laser unit failure
Replace the laser unit.
