Brother HL-5580D, Service Manual

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2-109
Confidential

Downward fogging of solid color
 Horizontal lines
 Ghost
<User Check>
- Replace the toner cartridge with a new one.
Step Cause Remedy
1
High-voltage power supply PCB
failure Replace the high-voltage power supply PCB
ASSY.
2 Main PCB failure Replace the main PCB ASSY.
<User Check>
- This problem may disappear after printing multiple
sheets of paper.
- Refer to <How to clean the drum unit> to remove the dirt
from the exposure drum using a cotton applicator.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step Cause Remedy
1
Dirty charge electrodes Clean the electrodes of the drum unit and
those of the machine. (Refer to
Fig. 2-6 and
Fig. 2-7 .)
2 Scratch or dirt on the fuser unit Replace the fuser unit.
3
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 that the appropriate paper type is selected in the driver.
- Select "Improve Toner Fixing" in the driver.
- Replace the drum unit with a new one.
Step Cause Remedy
1 Scratch or dirt on the fuser unit Replace the fuser unit.
2
High-voltage power supply PCB
failure Replace the high-voltage power supply PCB
ASSY.