Printer 4-Color: Uneven Image - Konica Minolta bizhub C250 Service Manual

18. Image quality problem
18.3.38

Printer 4-Color: uneven image

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Toner Cartridge
1
2 PH Unit
3
Toner Cartridge
4
Imaging Unit
5
Transfer Roller
6
Fusing Unit
7
8
516
4138fs4507c0
Check Item
The Toner Cartridge of every color
is surely installed.
The PH Unit is surely installed.
Uneven pitch occurs in 3.0 mm
pitch.
There is any stain or breakage on
the Drive section of the Toner Car-
tridge.
There is any stain, damage or abra-
sion on the PC drum.
There is any stain, damage, defor-
mation or abrasion on the Transfer
roller.
There is any stain, damage, defor-
mation or abrasion on the Roller
and Drive section of the Fusing
Unit.
The problem has been eliminated
through the check of step 7.
Field Service Ver. 3.0 Aug. 2006
Result Action
NO Re-install it.
NO Re-install it.
YES Replace the PH Unit
Holder.
YES Clean/replace the Toner
Cartridge.
YES Replace the Imaging Unit.
YES Replace the Transfer
Roller.
YES Replace the Fusing unit.
NO Replace the Image Trans-
fer Belt unit.