Konica Minolta Magicolor 5440 DL - Manual (Page 221)

Image Quality Problems Main Unit Field Service
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5.1.2 White lines in CD, white bands in CD, colored lines in CD, and colored
bands in CD
A. Typical Faulty Images
B. Troubleshooting Procedure
White lines in CD White bands in CD Colored lines in CD Colored bands in CD
4036fs4025c0 4036fs4026c0 4036fs4027c0 4036fs4028c0
Step Section Check Item Result Action
1
Toner Cartridge
Are there scratches or lines evi-
dent on photo conductor surface?
YES Change the Toner Cartridge.
2 Is the outside dirty? YES Clean.
3
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.
4
Is the developing bias contact ter-
minal in good contact?
NO
Clean the contact terminal or
check the terminal position.
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 Transfer Roller dirty or
scratched?
YES Change the Transfer Roller.
7 Media path
Is there a foreign matter on the
media path?
YES Remove the foreign matter.
8
Fusing Unit
Is the Fusing Entrance Guide
Plate dirty or scratched?
YES Clean.
9 Is the Separator Fingers dirty? YES Change the Fusing Unit.
10
Has the problem been eliminated
through the checks of steps up to
9?
NO
Change the Low Voltage Unit.
→ Change the Transfer Belt Unit.
→ Change the Fusing Unit.
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