Xerox Phaser 6120 Service Manual - Foggy Background
Image-Quality Problems
Phaser® 6120 Color Laser Printer Service Manual
4-30
Foggy Background
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
Is the connector or contact terminal
of the Imaging Unit connected
properly?
NO
Clean the contact terminal or
reconnect the connector.
4
Toner
Cartridge
Is the developing bias contact
terminal in good contact?
NO
Clean the contact terminal or
check the terminal position.
5
Laser (PH)
Unit
Is the connector or contact terminal
of the Laser Unit (PH) Unit connected
properly?
NO
Clean the contact terminal or
reconnect the connector.
6
Is the window surface dirty?
YES
Clean.
7
Density
Sensor
Is the Density (AIDC) sensor dirty?
YES
Clean. It is located on top of the
transfer belt.
8
Have steps 1-7 eliminated the
problem?
NO
■
Replace the Toner Cartridge.
■
Replace the Laser Unit (PH).
■
Replace the Transfer Belt.
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