Vertical Streaks; Black Vertical Streaks On A Light Background - Brother DCP-1510 Service Manual

4.4.9 Vertical streaks

Step
Attachment failure of the FG
1 harness or FG plate (not grounded
correctly)
2 Scratch or dirt on the heat unit
Note:
• If the machine prints the same pattern continuously, especially a pattern including
vertical streaks, black vertical streaks may appear on the paper because the
electrostatic performance of the exposure drum has lowered temporarily.

4.4.10 Black vertical streaks on a light background

Step
1 Dirt on paper feed system
2 Scratch or dirt on the heat unit
3 Foreign object in the laser unit
<User Check>
- Clean the inside of the machine and the corona wire of
the drum unit.
- Return the corona wire cleaning tab to the "
- This problem may disappear after printing multiple
sheets of paper.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Cause
<User Check>
- Clean the inside of the machine and the corona wire of the drum
unit.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Cause
1-52
Remedy
Retighten the screws to secure the FG
harness or FG plate.
Replace the fuser unit.
Remedy
Wipe off the dirt.
Replace the fuser unit.
Replace the laser unit.
" position.
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