Drum Error; Drum Replacement Message Displayed On Lcd Is Not Cleared - Brother HLL3290CDW Service Manual

4.7.4

Drum error

<User Check>
• Clean the corona wire of the drum unit.
• Replace the drum unit with a new one.
Step
1
2
3
4
4.7.5

Drum replacement message displayed on LCD is not cleared

<User Check>
• Reset the drum counter according to the manual.
Step
1
Cause
Dirt on the electrodes of the
drum unit and those of the
machine
Dirt on the electrodes of the
high-voltage power supply
PCB and those of the
machine
High-voltage power supply
PCB failure
Main PCB failure
Cause
Main PCB failure
Clean the electrodes of the drum unit and
those of the machine. (Refer to
78) and Fig. 2-12
Clean the electrodes of the high-voltage
power supply PCB and those of the machine.
Replace the high-voltage power supply PCB.
Replace the main PCB.
Replace the main PCB.
2-141
Remedy
Fig. 2-11 (P2-
(P2-78).)
Remedy
Confidential