White Lines In Cd, White Bands In Cd, Colored Lines In Cd, And Colored Bands In Cd - Konica Minolta magicolor 5430 DL Service Manual

Image Quality Problems
5.1.2 White lines in CD, white bands in CD, colored lines in CD, and colored
bands in CD
A. Typical Faulty Images
White lines in CD
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B. Troubleshooting Procedure
Step Section
1
2
Toner Cartridge
3
4
5
Transfer Belt Unit
6
7 Media path
8
Fusing Unit
9
10
White bands in CD Colored lines in CD
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Check Item
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 Transfer Belt dirty or
scratched?
Is the Transfer Roller dirty or
scratched?
Is there a foreign matter on the
media path?
Is the Fusing Entrance Guide
Plate dirty or scratched?
Is the Separator Fingers dirty?
Has the problem been eliminated
through the checks of steps up to
9?
4-34
Main Unit Field Service
Colored bands in CD
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Result Action
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.
Wipe the surface clean of dirt with
a soft cloth.
YES
Change a scratched Transfer Belt
for a Transfer Belt Unit.
YES Change the Transfer Roller.
YES Remove the foreign matter.
YES Clean.
YES Change the Fusing Unit.
Change the Low Voltage Unit.
→ Change the Transfer Belt Unit.
NO
→ Change the Fusing Unit.
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