Technical data

7.6 Deletions, Blank, or White Spots
5. Remove the developer unit and inspect the distribution of
toner on the developer roller. You can manually turn the roller
clockwise.
6. Look for burrs or scratches on the registration or postfuser paper
path guides.
7. Inspect the fuser rollers for scratches or damage.
8. Inspect the upper and lower fuser stripper fingers.
9. Swap the fuser unit.
10. Swap the developer cartridge.
11. Swap the print cartridge.
7.6.2 Horizontal Deletions or White Bands
Description: One or more bands of white running horizontally
across the sheet. Perform the classification procedure, as shown in
Section 7.6.
Troubleshooting: Suspect rollers or any horizontal component.
Perform the following procedure:
1. Remove, clean, and inspect the transfer/separation charger.
2. Go to Section 7.16 and verify the operation of the erase LEDs.
3. Remove the developer unit and inspect the developer roller. Turn
the developer roller clockwise to check for sticking or binding.
Make sure toner is distributed evenly around the circumference
of the roller.
4. Replace or swap the developer unit.
5. Go to Section 4.5, Erratic Operation.
Image Defects FIPs 7–9