Uneven Density In Fd - Konica Minolta magicolor 2400W Service Manual

Field Service Ver. 4.0 Feb. 2006
20.1.3

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?
Have steps 1-6 eliminated the
problem?
20. Image Quality Problems
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 High Voltage Unit.
Action
151