Xerox Phaser 6120

Image-Quality Problems
Phaser® 6120 Color Laser Printer Service Manual
4-26
Uneven Density in the Feed Direction
Typical Faulty Images
Troubleshooting Procedure
Step Section Check Item Result Action
1 Imaging Unit Are there scratches or lines evident
on the photo conductor surface?
YES Replace the Imaging Unit.
2 Is the outside of the imaging unit
dirty?
YES Clean.
3 Laser (PH)
Unit
Is the window surface dirty? YES Clean.
4 Transfer Belt
Unit
Is the Transfer Belt dirty or
scratched?
YES Wipe the surface clean of dirt with
a soft cloth.
Replace the scratched Transfer
Belt with a new Transfer Belt Unit.
5 Is the terminal dirty? YES Clean.
6 Is the 2nd Transfer Roller dirty or
scratched?
YES Replace the Transfer Roller.
7 Have steps 1-6 eliminated the
problem?
NO
■ Replace the Problem Toner
Cartridge.
■ Replace the Laser Unit (PH).
■ Replace High Voltage Unit.
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