Minolta 5450 Manuel de service Page 222

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Main Unit Field Service Image Quality Problems
4-35
IV
Troublshooting
5.1.3 Uneven density in FD
A. Typical Faulty Images
B. Troubleshooting Procedure
4036fs4043c0 4036fs4044c0 4036fs4045c0
Step Section Check Item Result Action
1
Adjustment
/Setting
The Printer is being operated at
high altitude.
YES
Adjust the image with “ALTITUDE
SETUP” (magicolor 5430 DL/
5440 DL)
ENGINE/ENGINE SERVICE/
RESTORE USER DEFAULT/
ALTITUDE SETUP
Adjust the image with “IMAGE
ADJ PRAM” (magicolor 5450)
SERVICE MENU/ALIGN-
MENT/IMAGE ADJ PRAM
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 PH Unit Is the window surface dirty? YES Clean.
5
Transfer Belt Unit
Is the Transfer Belt dirty or
scratched?
YES
Wipe the surface clean of dirt with
a soft cloth. Change a scratched
Transfer Belt for a Transfer Belt
Unit.
6 Is the terminal dirty? YES Clean.
7
Is the Transfer Roller dirty or
scratched?
YES Change the Transfer Roller.
8
Has the problem been eliminated
through the checks of steps up to
6?
NO
Change the Toner Cartridge.
Change the Transfer Belt Unit.
Change the PH Unit.
Change High Voltage Unit/1.
Change High Voltage Unit/2.
5450_E.book_PDF.book 35 ページ 2005年4月12日 火曜日 午後12時54分
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