Faulty Registration - Brother DCP-9055CDN Service Manual

■ Faulty registration

Step
1 Registration rear actuator
catching on some position
2 Engine PCB failure
■ Dark
<User Check>
Step
1 Corona wire conduction
failure
2 Dirt on belt unit electrode
3 High-voltage power supply
PCB failure
4 Engine PCB failure
5 Main PCB failure
6 Laser unit failure
7 Registration mark sensor
PCB failure
8 Toner/New sensor PCB
failure
Cause
- Check the machine's environment. High temperature and high humidity
or low temperature and low humidity conditions can cause this problem.
- Clean the corona wire.
- Replace the toner cartridge or drum unit with a new one.
- Adjust the color density from the control panel.
Cause
2-113
Remedy
Correct catching of the registration rear
actuator.
Replace the engine PCB ASSY.
Remedy
Clean the electrodes of the drum unit and
main body. (Refer to Fig. 2-10 (P2-62)
Fig. 2-13 (P2-63))
Clean the electrodes of the belt unit and main
body. (Refer to Fig. 2-11 (P2-62)
Fig. 2-13 (P2-63))
Replace the high-voltage power supply PCB
ASSY.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
Replace the laser unit.
Replace the registration mark sensor holder
ASSY.
Replace the Toner/New sensor PCB ASSY.
and
and
Confidential