Printer 4-Color: Void Areas, White Spots - Konica Minolta Bizhub C350 Service Manual

Image quality problem
4.3.34

Printer 4-Color: void areas, white spots

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Image Check There are void areas at the front
1
side or high density section.
There are void areas in the trailing
2 edge.
Transfer Belt Unit Fingerprints, oil, or other foreign
3 matter is evident on the Transfer
Belt.
Transfer Belt is dirty or scratched.
4
5 Transfer Roller Transfer Roller is dirty or scratched. YES Change Transfer Roller Unit.
Unit
Charge Neutralizing Cloth is not
6 separated and ground terminal is
connected properly.
Paper path There is foreign matter on paper
7
path.
Pre-Image Transfer Guide Plate is
8
damaged or dirty.
Paper Dust Paper dust accumulates on Paper
9
Remover Dust Remover.
The problem has been eliminated
through the checks of steps up to 9.
10
bizhub C350 Field Service Ver. 2.0 April 2004
Void areas White spots
4036fs4050c0
Check Item
4-94
4036fs4051c0
Result Action
☞ 4-91
YES
YES Perform "2nd Transfer Adjust" of
"Image Adjust" under Tech. Rep.
mode.
YES Clean with specified solvent.
(See Maintenance.)
YES Clean dirty belt with a soft cloth.
Change Transfer Belt Unit if belt
is damaged.
NO Correct or change.
YES Remove foreign matter.
YES Clean or change.
YES Clean or change.
NO Change Image Transfer Roller
Unit.
Change Image Transfer Belt
Unit.