Xerox 4510 User Guide

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Solving Print-Quality Problems
Phaser® 4510 Laser Printer
4-9
Horizontal Dark Streaks
There are black lines that appear horizontally on the page. 
Possible Causes
Solutions
The print cartridge may be defective or at the end 
of its life.
Replace the print cartridge.
The paper path may be contaminated with toner.
Print several blank sheets of paper to remove the 
toner accumulations.
The fuser may be defective.
Replace the fuser (in the maintenance kit).