Color Misregistration - Brother MFC-9130CW Service Manual

■ Ghost
<User Check>
Step
1 Fuser unit failure
2 High-voltage power supply
PCB failure
3 Main PCB failure

■ Color misregistration

<User Check>
Step
1 Registration mark L failure
2 Registration mark R failure
3 Main PCB failure
■ Fogging
<User Check>
Step
1 High-voltage power supply
PCB failure
2 Main PCB failure
Note:
This problem often occurs when the drum unit or toner cartridge is nearly at the end of life.
- 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.
- Replace the drum unit with a new one.
Cause
- Implement the adjustment of color registration (adjustment of inter-color
position alignment).
- Replace the drum unit with a new one.
- Replace the belt unit with a new one.
- Replace the waste toner box with a new one.
Cause
- Check the machine's environment. High temperature and high
humidity or low temperature and low humidity conditions can cause this
problem.
- This symptom might stop occurring after making several prints.
- Replace the drum unit or toner cartridge with a new one.
- Do not use acid paper.
Cause
2-100
Remedy
Replace the fuser unit.
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Remedy
Replace the registration mark L PCB ASSY.
Replace the registration mark R PCB ASSY.
Replace the main PCB ASSY.
Remedy
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
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