Uneven Density In Fd - Konica Minolta magicolor 5430 DL Service Manual

Main Unit Field Service
5.1.3

Uneven density in FD

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Adjustment
1
/Setting
2
Toner Cartridge
3
4 PH Unit
5
Transfer Belt Unit
6
7
8
4036fs4043c0
Check Item
The Printer is being operated at
high altitude.
Are there scratches or lines evi-
dent on photo conductor surface?
Is the outside dirty?
Is the window surface dirty?
Is the Transfer Belt dirty or
scratched?
Is the terminal dirty?
Is the Transfer Roller dirty or
scratched?
Has the problem been eliminated
through the checks of steps up to
6?
4-35
Image Quality Problems
4036fs4044c0 4036fs4045c0
Result
Adjust the image with "ALTITUDE
SETUP" (magicolor 5430 DL/
5440 DL)
→ ENGINE/ENGINE SERVICE/
RESTORE USER DEFAULT/
YES
ALTITUDE SETUP
Adjust the image with "IMAGE
ADJ PRAM" (magicolor 5450)
→ SERVICE MENU/ALIGN-
MENT/IMAGE ADJ PRAM
YES Change the Toner Cartridge.
YES Clean.
YES Clean.
Wipe the surface clean of dirt with
a soft cloth. Change a scratched
YES
Transfer Belt for a Transfer Belt
Unit.
YES Clean.
YES Change the Transfer Roller.
Change the Toner Cartridge.
→ Change the Transfer Belt Unit.
→ Change the PH Unit.
NO
→ Change High Voltage Unit/1.
→ Change High Voltage Unit/2.
Action