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Print-Quality Problems
Phaser® 5500 Laser Printer
4-55
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 toner
accumulations.
3. Replace the fuser (in the
maintenance kit).
Repetitive Vertical Dark
Streaks
There are black lines that
appear vertically on the
page. For more information,
see "Repeating Defects" on
page 4-57.
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).
Diagnosing Print-Quality Problems (Continued)
Problem Causes Solutions