Back Marking - Konica Minolta magicolor 2500W Service Manual

19. Image quality problems
19.1.16

Back marking

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Media path
2
Fusing unit
3
4
Transfer belt unit
5
6
176
4036fs4062c0
Check item
Is there a foreign object in the
media path?
Is the fusing entrance guide plate
dirty or scratched?
Is the fusing roller scratched or
dirty?
Is the transfer belt dirty with fin-
gerprints or foreign matter?
Is the 2nd transfer roller dirty or
scratched?
Have steps 1 to 5 eliminated the
problem?
Field Service Ver. 1.0 Aug. 2006
AA AA
4036fs4063c0
Result Action
YES Remove the foreign object.
YES Clean or replace.
YES Replace the fusing unit.
YES Clean.
YES Replace the 2nd transfer roller.
Replace the transfer belt unit.
NO
→ Replace the high voltage unit.