Brother HL-5580D, Service Manual

Page: 130 / 433

2-104
Confidential

Black vertical streaks on a light background
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Horizontal streaks
 White vertical streaks
<User Check>
- Clean the corona wire of the drum unit.
- 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.
- Turn ON the power switch, and leave the machine for a while
(condensation).
- 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 Laser unit failure Replace the laser unit.
<User Check>
- Clean the corona wire of the drum unit.
- 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
FG harnesses or FG plate
attachment failure (not grounded
correctly) Retighten the screws to secure the FG
harnesses or FG plate.
Fix the bent tray ground spring of the paper
tray. (Refer to
Fig. 2-12 .)
3 Scratch or dirt on the fuser unit Replace the fuser unit.
4
High-voltage power supply PCB
failure Replace the high-voltage power supply PCB
ASSY.
<User Check>
- Clean the corona wire of the drum unit.
- Check that there is no dust on the toner cartridge.
- 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 Laser unit failure Replace the laser unit.