Konica Minolta Magicolor 5440 DL - Manual (Page 226)

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