Faulty Registration - Brother DCP-8110DN Service Manual

Faulty registration

Step
Adjusted value of the laser unit is
1 incorrect.
Registration rear actuator caught in
2
some sections of the machine
3 Laser unit failure
Dark
<User Check>
- Check the usage environment of the machine. Using the machine in
- Clean the corona wire.
- If a new toner cartridge has been set, check whether it was replaced
- Adjust the density using the Density Adjustment.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step
Dirt on electrodes of the drum unit
1
High-voltage power supply PCB
2
failure
3 Laser unit failure
4 Main PCB failure
<User Check>
- Check that the appropriate paper type is selected in the
driver.
Cause
high temperature and humidity conditions can cause this problem.
with a used toner cartridge.
Cause
2-74
Remedy
Refer to "2.1 Entering Adjusted Value of
Laser Unit" in Chapter
adjusted value of the laser unit again.
Reattach the registration rear actuator.
Replace the laser unit.
Remedy
Clean the electrodes of the drum unit and
those of the machine. (Refer to
Fig. 2-11.)
Replace the high-voltage power supply PCB
ASSY.
Replace the laser unit.
Replace the main PCB ASSY.
4, and enter the
Fig. 2-10 or
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