Xerox Phaser 6100 Service Manual page 136

Troubleshooting
White Spots / Black Spots / Colored Spots
Example
Contamination of the internal
mechanism of the toner cartridge.
Imaging unit surface contaminated or
damaged.
Transfer belt is contaminated or
damaged.
Fuser unit is contaminated.
Are the spots a repeating defect?
Toner Smudges on the Reverse Side of the Page
Example
Paper path is contaminated.
Transfer belt is contaminated.
Pressure roller in the fuser is
contaminated.
Foggy Background
Example
The developer roller is contaminated.
Printing density is to dark.
8-6
Possible Cause
Possible Cause
Possible Cause
Sequence of Repair Actions
Replace the toner cartridge.
Replace the imaging unit.
Replace the transfer belt.
Run the fuser cleaning page up to 5 times.
Replace the fuser.
See the topic "Evenly repeating defect" .
Sequence of Repair Actions
Open covers fully and clean the paper path.
Clean or replace the transfer belt.
Run the fuser cleaning page up to 5 times.
Replace the fuser if needed.
Sequence of Repair Actions
Replace the toner cartridge.
Replace the imaging unit.