Brother DCP-L8400DN Service Manual

2-120
Confidential
4.7.4 Drum error
< User Check >
- Clean the corona wire.
- Replace the drum unit with a new one.
4.7.5 Drum replacement message displayed on LCD is not cleared
< User Check >
- Refer to “2.3 Counter Reset of Consumable Parts (Drum unit/Belt unit)” in Chapter 5, and
reset the drum counter.
Step Cause Remedy
1 Dirt on the GRID terminals or
CHG terminals of the main
body and the drum unit
Clean the GRID terminals and CHG
terminals of the main body and the drum unit.
2 Dirt on the terminal of the
high-voltage power supply
PCB
Clean the terminal of the high-voltage power
supply PCB.
3 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4 Toner sensor failure Replace the toner/new sensor PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.

Brother DCP-L8400DN Specifications

General

Brand	Brother
Model	DCP-L8400DN
Category	All in One Printer
Language	English