Monocolor: Uneven Image - Konica Minolta magicolor 7450 Service Manual

Field Service Ver. 1.0 May 2006
16.3.12

Monocolor: 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
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
Cartridge.
There is any stain, damage or
abrasion on the PC drum.
There is any stain, damage,
deformation or abrasion on the
Transfer roller.
There is any stain, damage,
deformation or abrasion on the
Roller and Drive section of the
Fusing Unit.
The problem has been eliminated
through the check of step 7.
16. Image quality problem
4138fs4507c0
Result
NO Re-install it.
NO Re-install it.
YES Replace the PH Unit Holder.
Clean/replace the Toner Car-
YES
tridge.
YES Replace the Imaging Unit.
YES Replace the Transfer Roller.
YES Replace the Fusing unit.
NO Replace the Transfer Belt.
Action
227