2-51
Confidential
Completely blank
Image distortion
<User Check>
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
• Install the latest main firmware.
Step
Cause
Remedy
1
Dirt on the electrodes of the
drum unit, toner cartridge and
those of the machine
Clean the electrodes of the drum unit, toner
cartridge and those of the machine. (Refer to
and
2
Connection failure of the laser
unit flat cable
Reconnect the laser unit flat cable.
3
Laser unit attachment failure
Reattach the laser unit.
4
Laser unit flat cable failure
Replace the laser unit flat cable.
5
Dirt on the electrodes of the
high-voltage power supply
PCB and those of the
machine
Clean the electrodes of the high-voltage
power supply PCB and those of the machine.
6
Laser unit failure
Replace the laser unit.
7
Main PCB failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Laser unit attachment failure
Reattach the laser unit.
2
Laser unit failure
Replace the laser unit.
3
Main PCB failure
Replace the main PCB ASSY.