Brother MFC-8535DN Service Manual

2-112
Confidential
4.7.4 Drum error
4.7.5 Error message prompting drum replacement does not disappear
<User Check>
• Clean the corona wire of the drum unit.
• Replace the drum unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the drum
unit and those of the machine
Clean the electrodes of the drum unit and
those of the machine. (Refer to Fig. 2-8 and
Fig. 2-9.)
2
Dirt on the high-voltage power
supply PCB terminal
Clean the electrodes of the machine.
(Refer to Fig. 2-9.)
3
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
4 Main PCB failure Replace the main PCB ASSY.
<User Check>
• Reset the drum counter according to the manual.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.

Brother MFC-8535DN Specifications

General

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