Uneven Density In Fd - Konica Minolta magicolor 2490MF Service Manual

Field Service Ver. 1.0 Jul. 2006
17.2.10

Uneven density in FD

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1
Drum cartridge
2
3 PH unit
4
Transfer belt unit
5
6
7 -
4036fs4043c0
Check Item
Are there scratches or lines evi-
dent on the photo conductor sur-
face?
Is the outside dirty?
Is the window surface dirty?
Is the transfer belt dirty or
scratched?
Is the terminal dirty?
Is the 2nd transfer roller dirty or
scratched?
The problem has been eliminated
after performing step 6.
17. Miscellaneous errors
4036fs4044c0 4036fs4045c0
Result
YES Replace the drum cartridge.
YES Clean.
YES Clean.
Wipe the surface clean of dirt with
a soft cloth.
YES
Replace the scratched transfer
belt with a new transfer belt unit.
YES Clean.
YES Replace the 2nd transfer roller.
Replace the toner cartridge.
→ Replace the PH unit.
NO
→ Replace the hight voltage unit.
Action
259