Xerox Phaser 6120 Service Manual - page 115
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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