2-103
Confidential
■
Ghost
■
Inter-color position alignment
■
Fogging
<User Check>
- Check the machine’s environment. High temperature and high humidity
or low temperature and low humidity conditions can cause this problem.
- Check whether appropriate paper type is selected on the driver.
- Select "Improve Toner Fixing Mode" in the driver.
- Make a print in the color mode.
- Replace the drum unit with a new one.
Step
Cause
Remedy
1
Scratch and dirt on fuser unit
Replace the fuser unit.
2
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
<User Check>
- Implement the adjustment of color registration (adjustment of inter-color
position alignment).
- Replace the belt unit with a new one.
- Replace the drum unit with a new one.
- Replace the waste toner box with a new one.
Step
Cause
Remedy
1
Registration mark sensor L or
registration mark sensor R
failure
Replace the registration mark sensor unit.
2
Main PCB failure
Replace the main PCB ASSY.
<User Check>
- Check the machine’s environment. High temperature and high humidity
or low temperature and low humidity conditions can cause this problem.
- Check if the acid paper is not used.
- This symptom might stop occurring after making several prints.
- Replace the toner cartridge with a new one.
- Replace the drum unit with a new one.
Step
Cause
Remedy
1
Toner/new sensor PCB failure
Replace the toner/new sensor PCB ASSY.
2
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
3
Main PCB failure
Replace the main PCB ASSY.
Note:
This problem often occurs when the drum unit or toner cartridge is nearly at the end of life.
