Konica Minolta bizhub C360 Service Manual page 788

All-in-one color laser mfp
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Field Service Ver. 2.1 Feb. 2012
23.3.27
Printer 4-color: white lines, white bands, colored lines and colored bands
in sub scan direction
A. Typical faulty images
White lines
B. Troubleshooting procedure
Step
Section
1
Image check
2
Transfer belt unit Fingerprints, oil, or other foreign
3
4
5
Transfer roller
unit
6
Paper path
7
8
Fusing unit
9
10
White bands
Check item
A white line or colored line in sub
scan direction.
matter is evident on the transfer belt.
Transfer belt is dirty or scratched.
Cleaning blade is not effective in
removing toner completely.
Transfer roller is dirty or scratched.
There is foreign matter on paper
path.
Image transfer paper separator
fingers are damaged or dirty.
Fusing entrance guide plate is dirty
or damaged.
Fusing paper separator fingers are
dirty.
The problem has been eliminated
through the checks of steps up to 9.
23. IMAGE QUALITY PROBLEM
Colored lines
Colored bands
Result
YES Clean the comb electrode.
YES Clean with specified solvent.
(See Maintenance.)
YES Clean dirty belt with a soft cloth.
Change transfer belt unit if belt is
damaged.
YES Change transfer belt unit.
YES Change transfer roller unit.
YES Remove foreign matter.
YES Clean or change.
YES Clean.
Change fusing unit.
YES Clean.
NO
Change printer control board
A02EF4C507DA
Action
733

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