Brother MFC-8510DN, Service Manual

Page: 122 / 373

2-77
Confidential
„
Dirt on the back of paper
„ Vertical streaks
Fig. 2-12
<User Check>
- This problem may disappear after printing multiple
sheets of paper.
- Replace the toner cartridge with a new one.
Step Cause Remedy
1 Dirt on paper feed system Wipe off the dirt.
2 Dirt on the fuser unit Replace the fuser unit.
<User Check>
- Clean inside the machine and the corona wire of the
drum unit.
- Return the corona wire cleaning tab to the [ ] position.
- This problem may disappear after printing multiple
sheets of paper.
- Refer to the User's Guide 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.
- Clean the eject pinch roller.
Step Cause Remedy
1
Dirt on paper feed system Wipe off the dirt on the sections shown in
the illustration below.
2
Earth wires or earth plate
attachment failure (not grounded
correctly) Retighten the screws to secure the earth
wires or earth plate.
3 Scratches or dirt on the heat unit Replace the fuser unit.