White Lines In Cd, White Bands In Cd, Colored Lines In Cd, And Colored Bands In Cd - Konica Minolta magicolor 2500W Service Manual

19. Image quality problems
19.1.2 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
4036fs4025c0
B. Troubleshooting procedure
Step Section
1
2 Drum cartridge
3
4 Toner cartridge
5 PH unit
6
Transfer belt unit
7
8 Media path
9
Fusing unit
10
11
162
White bands in CD
4036fs4026c0
Check item
Are there scratches or lines evi-
dent on the photo conductor sur-
face?
Is the outside dirty?
Is the connector or contact termi-
nal of the drum cartridge con-
nected properly?
Is the developing bias contact ter-
minal in good contact?
Is the connector or contact termi-
nal of the PH unit connected
properly?
Is the transfer belt dirty or
scratched?
Is the 2nd transfer roller dirty or
scratched?
Is there a foreign object in the
media path?
Is the fusing entrance guide plate
dirty or scratched?
Is the separation claw dirty.
Have steps 1 to 10 eliminated the
problem?
Field Service Ver. 1.0 Aug. 2006
Colored lines in CD Colored bands in CD
4036fs4027c0
Result
YES Replace the drum cartridge.
YES Clean.
Clean the contact terminal or
NO
reconnect the connector.
Clean the contact terminal or
NO
check the terminal position.
Clean the contact terminal or
NO
reconnect the connector.
Wipe the surface clean of dirt with
a soft cloth.
YES
Replace the scratched transfer
belt with a new transfer belt unit.
YES Replace the 2nd transfer roller.
YES Remove the foreign object.
YES Clean.
YES Replace the fusing unit.
NO Replace the DC power supply.
4036fs4028c0
Action