Colored Spots - Konica Minolta magicolor 2400W Service Manual

20. Image Quality Problems
20.1.10

Colored spots

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1
Drum Cartridge
2
3
4 Transfer Belt Unit
5
6 Paper path
7 Fusing Unit
8
158
Colored spots
AA AA
Check Item
Are the spots in a single color?
Are there scratches or lines evi-
dent on the photo conductor sur-
face?
Is the Transfer Belt dirty with fin-
gerprints or oil?
Is the Transfer Belt dirty or
scratched?
Is the 2nd Transfer Roller dirty or
scratched?
Is there a foreign object in the
paper path?
Is the Fusing Roller dirty or
scratched?
Have steps 1-7 eliminated the
problem?
Field Service Ver. 4.0 Feb. 2006
4036fs4052c0
Result
NO Replace the Drum Cartridge.
YES Replace the Drum 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 Replace the 2nd Transfer Roller.
YES Remove the foreign object.
YES Replace the Fusing Unit.
NO Replace the Toner Cartridge.
Action