Konica Minolta Bizhub 20p Service Manual page 99

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<Clean the drum unit as follows>
If you have print quality problems, clean the drum unit as follows:
(1) Put the print sample in front of the drum unit, and find the exact position of the poor print.
(2) Turn the drum unit gear to the direction of the arrow of the figure by hand while looking at
the surface of the exposure drum.
(3) When you have found the mark on the drum that matches the print sample, wipe the
surface of the exposure drum with a dry cotton swab until the dust or glue on the surface
comes off.
CAUTION :
• DO NOT clean the surface of the photosensitive drum with a sharp object.
Fig. 3-8
Fig. 3-9
Fig. 3-10
3-42
Confidential

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