Brother DCP-8110DN Service Manual page 129

Ghost
<User Check>
- Check the usage environment of the machine. Using the machine in
- Check that the appropriate paper type is selected in the driver.
- Select "Reduce Ghosting" in the driver.
- Select "Improve Toner Fixing" in the driver.
- Replace the drum unit with a new one.
Step
High-voltage power supply PCB
1
failure
2 Main PCB failure
Fogging
<User Check>
- Check the usage environment of the machine. Using the machine in
- This problem may disappear after printing multiple sheets of paper.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
- Do not use acid paper.
Step
1 Relay front PCB failure
Toner sensor PCB failure
2
High-voltage power supply PCB
3
failure
4 Main PCB failure
CAUTION:
• This problem tends to occur when the life of the drum unit or toner cartridge is expiring.
high temperature and humidity or low temperature and humidity
conditions can cause this problem.
Cause
high temperature and humidity or low temperature and humidity
conditions can cause this problem.
Cause
2-84
Remedy
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Remedy
Replace the relay front PCB ASSY.
Refer to "1.3.10 Check sensor operation
(function code: 32)" in Chapter 5
the sensor operation. If the sensor operation
is faulty, replace the toner sensor PCB
ASSY.
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
to check
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