Foggy Background - Konica Minolta magicolor 5430 DL Service Manual

Main Unit Field Service
5.1.7

Foggy background

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Adjustment
1
/Setting
2
3
Toner Cartridge
4
5
6 PH Unit
AIDC Sensor/Rt,
7
AIDC Sensor/Lt
8
ABCD
ABCD
ABCD
ABCD
ABCD
Check Item
The Duplex Option is being used,
and also the Printer is being oper-
ated in the climate such as dry or
highly humid.
(magicolor 5430 DL/5440 DL)
The Printer is being operated in
the climate such as dry or highly
humid (magicolor 5450)
Are there scratches or lines evi-
dent on photo conductor surface?
Is the outside dirty?
Is the connector or contact termi-
nal between each Toner Car-
tridge and PH Unit connected
properly?
Is the developing bias contact ter-
minal in good contact?
Is the window surface dirty?
Is the sensor dirty?
Has the problem been eliminated
through the checks of steps up to
6?
4-39
Image Quality Problems
4036fs4030c0
Result
Adjust the image with "DUPLEX
DENSITY."
(magicolor 5430 DL/5440 DL)
→ ENGINE/ENGINE SERVICE/
RESTORE USER DEFAULT/
YES
DUPLEX DENSITY
Adjust the image with "TRANS-
FER POWER" (magicolor 5450)
→ SERVICE MENU/ALIGNMENT
/TRANSFER POWER/
YES Change the Toner Cartridge.
YES Clean.
Clean the contact terminal or
NO
reconnect the connector.
Clean the contact terminal or
NO
check the terminal position.
YES Clean.
YES Clean.
Change the Toner Cartridge.
→ Change the PH Unit.
NO
→ Change the AIDC Sensor.
Action