Brother MFC-8535DN Service Manual

2-101
Confidential
 Black vertical streaks on a light background
 Horizontal streaks
<User Check>
• Clean the corona wire of the drum unit.
• This problem may disappear after printing multiple sheets of paper.
• Refer to < How to clean the drum unit> to remove the dirt from the
exposure drum using a cotton applicator.
• Turn ON the power switch, and leave the machine for a while
(condensation).
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
Step Cause Remedy
1
Dirty charge electrodes
Clean the electrodes of the drum unit and those
of the machine. (Refer to Fig. 2-8 and Fig. 2-9.)
2 Laser unit failure Replace the laser unit.
<User Check>
• Clean the corona wire of the drum unit.
• This problem may disappear after printing multiple sheets of paper.
• Refer to < How to clean the drum unit> to remove the dirt from the
exposure drum using a cotton applicator.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
Step Cause Remedy
1
Dirty charge electrodes
Clean the electrodes of the drum unit and those
of the machine. (Refer to Fig. 2-8 and Fig. 2-9.)
2
FG harnesses or FG plate
attachment failure (not grounded
correctly)
Retighten the screws to secure the FG
harnesses or FG plate.
Fix the bent tray ground spring of the paper
tray. (Refer to Fig. 2-13.)
3 Scratch or dirt on the fuser unit Replace the fuser unit.
4
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.

Brother MFC-8535DN Specifications

General

Brand	Brother
Model	MFC-8535DN
Category	All in One Printer
Language	English