White Spots - Brother DCP-7080 Service Manual

 White spots
Step
Accumulated paper dust
1
Clogged filter
2
Scratch or dirt on the fuser unit
3
High-voltage power supply PCB
4
failure
<User Check>
- Check that the fan is not clogged.
- 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.
Cause
2-74
Remedy
Remove the paper dust cleaning roller cover
and get rid of the paper dust in the area
described in Fig. 2-10.
Clean the filter.
Replace the fuser unit.
Replace the high-voltage power supply PCB
ASSY.
Confidential