Brother FAX-2840 Service Manual page 112

Ghost
<User Check>
- Check the machine's environment. High temperature and high
- Choose Reduce Ghosting mode 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>
- This problem may disappear after printing approximately 10 pages
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
- Do not use acid paper.
Step
High voltage power supply PCB
1
failure
2 Main PCB failure
CAUTION:
• This problem often occurs when the drum unit or toner cartridge is nearly at the end of
life.
humidity or low temperature and low humidity conditions can cause
this problem.
Cause
of completely blank sheets.
Cause
2-75
Remedy
Replace the high voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Remedy
Replace the high voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
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