Poor Fixing - Brother DCP-8110DN Service Manual

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Poor fixing

<User Check>
- Check the usage environment of the machine. Using the machine in
- Select "Improve Toner Fixing" in the driver.
- Clean the corona wire.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step
1
Fuser unit failure
High-voltage power supply PCB
2
failure
Low-voltage power supply PCB
3
failure
4
Laser unit failure
5
Main PCB failure
Completely blank
<User Check>
- Clean the corona wire.
- 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
and those of the machine
2
Laser unit attachment failure
3
Laser unit failure
High-voltage power supply PCB
4
failure
5
Main PCB failure
high temperature and humidity or low temperature and humidity
conditions can cause this problem.
Cause
Cause
2-75
Remedy
Replace the fuser unit.
Replace the high-voltage power supply PCB
ASSY.
Replace the low-voltage power supply PCB
ASSY.
Replace the laser unit.
Replace the main PCB ASSY.
Remedy
Clean the electrodes of the drum unit and
those of the machine. (Refer to
Fig.
2-11.)
Reattach the laser unit.
Replace the laser unit.
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Fig. 2-10
or
Confidential

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