Uneven Pitch - Konica Minolta Bizhub-C31P Service Manual

Field Service Ver. 1.0 Apr. 2008
16.1.17

Uneven pitch

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Toner cartridge
2 PH unit
3
Imaging unit
4
5 Transfer roller
6 Fuser unit
7 Driving unit
8
Check item
Is the toner cartridge for each
color of toner installed in posi-
tion?
Is the PH unit secured in position
with the fixing screw?
Is the drive mechanism of the
imaging unit dirty or damaged?
Is the photo conductor dirty,
scratched, or worn?
Are the transfer roller and drive
mechanism dirty, scratched,
deformed, or worn?
Are the rollers and drive mecha-
nism of the fuser unit dirty,
scratched, deformed, or worn?
During color printing, this symp-
tom happens with 0.5 mm
pitches.
Has the problem been eliminated
through the checks of steps up to
7?
16. Image quality problems
Result Action
NO Reinstall.
NO Secure it in position.
YES Clean or change the imaging unit.
YES Change the imaging unit.
YES Change the transfer roller.
YES Change the fuser unit.
YES Change the driving unit.
NO Change the transfer belt.
A0EAF4C517DA
237