Brother HL-L8250CDN Service Manual page 118

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Dirt on back side of paper
Step
1 Dirt in the paper feed system
2 Dirt on the electrodes of the
main body and the belt unit
3 Dirt on the electrodes of the
main body and the waste
toner box
4 Dirt on the cleaner pinch roller
of the fuser cover
5 Dirt on the fuser unit
6 High-voltage power supply
PCB failure
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Electrodes location of waste toner box
<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.
Clean the electrodes of the main body and
the belt unit.
(Refer to
Clean the electrodes of the main body and
the waste toner box.
(Refer to
below.)
Replace the cleaner pinch roller S ASSY.
Replace the fuser unit.
Replace the high-voltage power supply PCB
ASSY.
Fig. 2-10
2-95
Remedy
Fig. 2-5 (P2-55), Fig. 2-9
Fig. 2-5 (P2-55), See the figure
(P2-91).)
Confidential