Brother HL-4150CDN - Faulty Registration

2-97
Confidential
■ Faulty registration
■ Dark
Step Cause Remedy
1 Registration rear actuator
catching on some position
Correct catching of the registration rear
actuator.
2 Engine PCB failure Replace the engine PCB ASSY.
<User Check>
- Check the printer’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.
Step Cause Remedy
1 Corona wire conduction
failure
Clean the electrodes of the drum unit and
main body. (Refer to Fig. 2-6 (P2-52) and
Fig. 2-9 (P2-53))
2 Dirt on belt unit electrode Clean the electrodes of the belt unit and main
body. (Refer to Fig. 2-7 (P2-52) and Fig. 2-9
(P2-53))
3 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4 Engine PCB failure Replace the engine PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.
6 Laser unit failure Replace the laser unit.
7 Registration mark sensor
PCB failure
Replace the registration mark sensor holder
ASSY.
8 Toner/New sensor PCB
failure
Replace the Toner/New sensor PCB ASSY.