Brother HL-2290 Service Manual page 99

 Ghost
<User Check>
• Check the usage environment of the machine. Using the machine in
• 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
Scratch or dirt on the fuser
1 unit, or conductive leaf spring
deformation
High-voltage power supply
2
PCB failure
 Fogging
<User Check>
• Check the usage environment of the machine. Using the machine in
• 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
Dirt on the electrodes of the
1 toner cartridge and those of
the machine
2 New toner sensor PCB failure
High-voltage power supply
3
PCB failure
4 Main PCB failure
Note:
This problem tends to occur when the life of the drum unit or toner cartridge is expiring.
hot-humid or cold-dry conditions can cause this problem.
Cause
hot-humid or cold-dry conditions can cause this problem.
Cause
2-77
Remedy
Replace the fuser unit.
Replace the high-voltage power supply PCB
ASSY.
Remedy
Clean the electrodes of the toner cartridge.
(Refer to Fig. 2-12 (P2-64).)
Replace the new toner sensor PCB ASSY.
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
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