Brother DCP-7030, Руководство по обслуживанию

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1-35
Confidential
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Dirt on the back of paper
■
Vertical streaks
CAUTION:
If the machine prints the same pattern, especially vertical streaks, continuous, black vertical
streaks may appear on the paper as the electrostatic performance of the drum is decreased.
■
Black vertical streaks in a light background
Step Cause Check Result Remedy
1
Scratch or Dirt
on the fuser unit Is the pressure roller
ASSY dirty?
Yes
Print approximate 10
pages.
Is any other area in the
machine dirty?
No
Replace the fuser unit.
2
Scratch or Dirt in
the paper feed
system Is the paper feed system
dirty?
Yes
Wipe dirt off.
User Check
• This problem may occur with noise which is caused by dirt
on the corona wire in the drum unit. In this case, clean the
corona wire with the wire cleaner.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
Step Cause Check Result Remedy
1
Scratch or Dirt in
the paper feed
system Is the paper feed system
dirty?
Yes
Wipe dirt off.
2
Scratch or Dirt
on the exposure
drum Are there scratch and
dirt on the surface of the
exposure drum?
Yes
Replace the drum unit.
3
Scratch or Dirt
on the heat roller Are there scratch and
dirt on the surface of the
heat roller?
Yes
Replace the fuser unit.
User Check
• Clean the inside of the machine and the corona wire in the drum
unit.
• Replace the toner cartridge with a new one.
Step Cause Check Result Remedy
1
Drum unit failure Is the problem solved after
replacing the drum unit?
Yes
Replace the drum unit.