Brother DCP-L3510CDW, Service Manual

Page: 159 / 430

2-123
Confidential
■
Dirt on back side of paper
■
Electrodes location of waste toner box
Fig. 2-17
<User Check>
• This problem may disappear after printing multiple
sheets of paper.
• Replace the drum unit with a new one.
• Replace the belt unit.
• Replace the waste toner box.
Step Cause Remedy
1 Dirt in the paper feed system Wipe dirt off.
2
Dirt on the electrodes of the
belt unit and those of the
machine Clean the electrodes of the belt unit and
those of the machine. (Refer to
Fig. 2-11 (P2-
78) and Fig. 2-16 (P2-119) .)
3
Dirt on the electrodes of the
waste toner box and those of
the machine Clean the electrodes of the waste toner box
and those of the machine. (Refer to
Fig. 2-11
(P2-78) and below.)
4 Dirt on the fuser unit Replace the fuser unit.
5
High-voltage power supply
PCB failure Replace the high-voltage power supply PCB.