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B930n User’s Guide> 119
Horizontal Dark Streaks -
There are black lines that
appear horizontally on the
page.
1. The drum cartridge
may be defective or at
the end of its life.
2. The paper path may be
contaminated with toner.
3. The fuser may be
defective.
1. Replace the drum
cartridge.
2. Print several blank
sheets of paper to
remove the tone
accumulations.
3. Replace the fuser (in
the maintenance kit).
Repetitive Vertical Dark
Streaks -
There are black lines that
appear vertically on thepage.
1. The paper path may be
contaminated with toner.
2. The drum cartridge
may be defective or at
the end of its life.
3. The fuser may be
defective.
4. The transfer roller may
be defective.
1. Print several blank
sheets of paper to
remove the toner
accumulations.
2. Replace the drum
cartridge.
3. Replace the fuser (in
the maintenance kit).
4. Replace the transfer
roller (in the
maintenance kit).
Dark Spots or Marks -
There are dark spots or
marks that appear in a
random pattern on the page.
1. The paper path may be
contaminated with toner.
2. The drum cartridge
may be defective.
3. The fuser may be
defective.
4. The transfer roller may
be defective.
1. Print several blank
sheets of paper to
remove the toner
accumulations.
2. Replace the drum
cartridge.
3. Replace the fuser (in
the maintenance kit).
4. Replace the transfer
roller (in the
maintenance kit).
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