Dirt On Back Side Of Paper - Brother MFC-9130CW Service Manual

■ Dirt on back side of paper

Step
1 Dirt in the paper feed system
2 Dirt in the fuser unit
3 High-voltage power supply
PCB failure
<User Check>
- This symptom might stop occurring after making
several prints.
- Replace the toner cartridge with a new one.
- Replace the belt unit.
- Replace the waste toner box.
Cause
Wipe dirt off.
Replace the fuser unit.
Replace the high-voltage power supply PCB
ASSY.
2-93
Remedy
Confidential