Uneven Pitch
Typical Faulty Images
Troubleshooting Procedure
Step
Section
1
Toner
Is the Toner Cartridge for each color
Cartridge
of toner installed in position?
2
Laser (PH)
Is the Laser Unit (PH) Unit secured in
Unit
position with the fixing screw?
3
Toner
Is the drive mechanism of the Toner
Cartridge
Cartridge dirty or damaged?
4
Imaging Unit Is the photo conductor dirty,
scratched, or worn?
5
2nd Transfer
Are the Transfer Roller and drive
Roller
mechanism dirty, deformed, or worn?
6
Fusing Unit
Are the rollers and drive mechanism
of the Fusing Unit dirty, scratched,
deformed, or worn?
7
Have steps 1-6 eliminated the
problem?
Phaser® 6120 Color Laser Printer Service Manual
4138fs4507c0
Check Item
Result
NO
NO
YES
YES
YES
YES
NO
4-40
Image-Quality Problems
Action
Reinstall.
Secure it in position.
Clean or replace the Toner
Cartridge.
Replace the Imaging Unit.
Replace the 2nd Transfer Roller.
Replace the Fusing Unit.
Replace the Transfer Belt Unit.