Brother DCP-2537DW, Service Manual

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2-97
Confidential

Ghost
 Fogging
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• Check whether appropriate paper type is selected on the driver.
• Select “Improve Toner Fixing” in the driver.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
Step Cause Remedy
1
Scratch or dirt on the fuser
unit, or conductive leaf spring
deformation Replace the fuser unit.
2
High-voltage power supply
PCB failure Replace the high-voltage power supply PCB
ASSY.
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• Check if the acid paper is not used.
• This problem may disappear after printing multiple sheets of paper.
• Replace the toner cartridge with a new one.
• Replace the drum unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the
toner cartridge and those of
the machine Clean the electrodes of the toner cartridge.
(Refer to
Fig. 2-16 (P2-84) .)
2 New toner sensor PCB failure Replace the new toner sensor PCB ASSY.
3
High-voltage power supply
PCB failure Replace the high-voltage power supply PCB
ASSY.
4 Main PCB failure Replace the main PCB ASSY.
Note:
This problem tends to occur when the life of the drum unit or toner cartridge is expiring.