Xerox Phaser 6120

Image-Quality Problems
Phaser® 6120 Color Laser Printer Service Manual
4-27
Uneven Density in Scan Direction (CD)
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 Transfer Belt
Unit
Check the mounting shafts on the
transfer belt assembly to ensure the
assembly is fully seated and installed
correctly.
NO Check or correct contact.
4 Does the transfer belt have
fingerprints, dirt or oil on it?
YES Wipe the surface clean of dirt with
a soft cloth.
5 Is the Transfer Belt scratched? YES Replace the Transfer Belt Unit.
6 Is the terminal dirty? YES Clean.
7
8 Have steps 1-7 eliminated the
problem?
NO
■ Replace the problem Toner
Cartridge.
■ Replace High Voltage Unit.
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