Back Marking - Konica Minolta magicolor 2590MF Service Manual

17. Miscellaneous errors
17.2.23

Back marking

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Paper path
2
Fusing unit
3
4
Transfer belt unit
5
6 -
278
4036fs4062c0
Check Item
Is there a foreign object in the
paper 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 oil?
Is the 2nd transfer roller dirty or
scratched?
The problem has been eliminated
after performing step 5.
Field Service Ver. 1.0 Aug. 2007
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.
→ Replace the fusing unit.
NO
→ Replace the high voltage unit.