Printer 4-Color: Back Marking - Konica Minolta bizhub C250 Service Manual

Field Service Ver. 1.0 Jul. 2005
18.3.37

Printer 4-Color: back marking

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
2nd Image Trans-
1
fer Roller Unit
Paper path
2
Fusing Unit
3
4
Transfer Belt Unit Fingerprints, oil, or other foreign
5
6
AA AA
4036fs4062c0
Check Item
Image Transfer Roller is scratched
or dirty.
There is foreign matter on paper
path.
Fusing Entrance Guide Plate is
scratched or dirty.
Lower Fusing Roller is scratched or
dirty.
matter is evident on the Transfer
Belt.
The problem has been eliminated
through the checks of steps up to 5.
18. Image quality problem
4036fs4063c0
Result Action
YES Change 2nd Image Transfer
Roller Unit.
YES Remove foreign matter.
YES Clean or change.
YES Change Fusing Unit.
YES Clean with specified solvent.
(See Maintenance.)
NO Change Image Transfer Belt
Unit.
→ Change High Voltage Unit
(Image Transfer, Neutralizing).
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