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

Field Service Ver. 3.0 Aug. 2006
18.3.37

Printer 4-Color: back marking

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
2nd Image Transfer
1
Roller Unit
Paper path
2
Fusing Unit
3
4
Transfer Belt Unit
5
6
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.
Fingerprints, oil, or other foreign
matter is evident on the Transfer
Belt.
The problem has been eliminated
through the checks of steps up to 5.
18. Image quality problem
AA AA
4036fs4063c0
Result
YES Change 2nd Image Trans-
fer Roller Unit.
YES Remove foreign matter.
YES Clean or change.
YES Change Fusing Unit.
YES Clean with specified sol-
vent. (See Maintenance.)
NO Change Image Transfer
Belt Unit.
→ Change High Voltage
Unit (Image Transfer,
Neutralizing).
Action
515