Colored Spots - Konica Minolta magicolor 5430 DL Service Manual

Image Quality Problems
5.1.10

Colored spots

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1
Toner Cartridge
2
3
Transfer Belt Unit
4
5
6 Media path
7 Fusing Unit
8
Colored spots
AA AA
Check Item
Are the spots in a single color?
Are there scratches or lines evi-
dent on photo conductor surface?
Is the Transfer Belt dirty with fin-
gerprints, oil, or other foreign mat-
ter?
Is the Transfer Belt dirty or
scratched?
Is the Transfer Roller dirty or
scratched?
Is there a foreign matter on the
media path?
Is the Fusing Roller dirty or
scratched?
Has the problem been eliminated
through the checks of steps up to
7?
4-42
Main Unit Field Service
4036fs4052c0
Result
YES Change the Toner Cartridge.
YES Change the Toner Cartridge.
YES Clean.
Wipe the surface clean of dirt with
a soft cloth.
YES
Change a scratched Transfer Belt
for a Transfer Belt Unit.
YES Change the Transfer Roller.
YES Remove foreign matter.
YES Change the Fusing Unit.
Change the Toner Cartridge.
→ Change the Transfer Belt Unit.
NO
→ Change the Fusing Unit.
Action