Xerox Phaser 4500 Reference Manual page 149

Diagnosing Print-Quality Problems (Continued)
Problem
Horizontal Line Deletions
There are localized print
deletions appearing as bands
running across the paper.
Vertical Dark Streaks
There are black lines running
across the print.
Repetitive Horizontal Dark
Streaks
There are black lines running
across the page. For more
information, see "Repeating
Defects" on page 4-29.
Causes
1. The paper may be defective
with creases, folds, etc.
2. The print cartridge may be
defective or at the end of its
life.
3. The transfer roller may be
defective.
1. The print 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. The paper path may be
contaminated with toner.
2. The print cartridge may be
defective or at the end of its
life.
3. The fuser may be defective.
4. The transfer roller may be
defective.
Phaser™ 4500 Laser Printer
4-26
Print-Quality Problems
Solutions
1. Replace the paper.
2. Replace the print cartridge.
3. Replace the transfer roller (in the
maintenance kit).
1. Replace the print cartridge.
2. Print several blank sheets of
paper to remove the toner
accumulations.
3. Replace the fuser (in the
maintenance kit).
1. Print several blank sheets of
paper to remove the toner
accumulations.
2. Replace the print cartridge.
3. Replace the fuser (in the
maintenance kit).
4. Replace the transfer roller (in the
maintenance kit).