2-61
Confidential
Ghost
Fogging
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• Check whether appropriate paper type is selected on the driver.
• Select “Improve Toner Fixing” in the driver.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
Step
Cause
Remedy
1
Scratch or dirt on the fuser
unit, or conductive leaf spring
deformation
Replace the fuser unit.
2
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• Check if the acid paper is not used.
• This problem may disappear after printing multiple sheets of paper.
• Replace the toner cartridge with a new one.
• Replace the drum unit with a new one.
Step
Cause
Remedy
1
Dirt on the electrodes
Clean the electrodes of the drum unit and
those of the machine. (Refer to
and
2
New toner sensor PCB failure
Replace the new toner sensor PCB ASSY.
3
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4
Main PCB failure
Replace the main PCB ASSY.
Note:
This problem tends to occur when the life of the drum unit or toner cartridge is expiring.
