Printer 4-Color: Back Marking - Konica Minolta bizhub C450 Service Manual

Field Service Ver. 1.0 Mar. 2005
18.3.38

Printer 4-Color: back marking

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Image Transfer
1
Roller Unit
Paper path
2
Fusing Unit
3
4
Transfer Belt Unit Fingerprints, oil, or other foreign
5
6
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 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 Roller
Unit.
→ Change Image Transfer Belt
Unit.
→ Change Fusing Unit.
→ Change High Voltage Unit/1
(Image Transfer, Neutralizing).
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