Xerox 7750DXF - Phaser Color Laser Printer Service Manual page 179

Banding
1. Print the "Repeating Defects Pages".
2.
Replace the unit of the affected color, using the repeating defects page.
3.
If the defect still appears in the same color, the problem is the developer.
4.
If all colors, the problem is with the accumulator belt, belt cleaner, transfer roller,
or fuser.
Random Spotting
There are spots of toner randomly scattered across the page. The printer displays no
error code.
Single Color
1. Inspect the toner cartridge for toner clumping.
2. Check the imaging units.
All Colors
1. Inspect the paper path.
2.
Inspect the accumulator belt cleaner and replace, if necessary.
3.
Inspect the transfer roller and replace, if necessary.
4.
Replace the fuser.
Print-Quality Troubleshooting
3041-44
3041-47
5-19