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

Image Quality Problems
5.1.4

Uneven density in CD

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Adjustment
1
/Setting
2
Toner Cartridge
3
4
5
Transfer Belt Unit
6
7
8
9
4036fs4046c0
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 contact on the rail of the
Transfer Belt Unit in good contact
with the mating part?
Is the Transfer Belt dirty with fin-
gerprints or oil?
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
7?
4-36
Main Unit Field Service
4036fs4047c0
Result Action
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.
NO Check or correct contact.
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.
NO
→ Change High Voltage Unit/1.
→ Change High Voltage Unit/2.