MX-M260/M310/M260N/M310N MAINTENANCE 8 - 4
[Countermeasures]
If a fingerprint is attached to the OPC drum surface erroneously,
perform the following countermeasures.
1) Use dry cloth to clean and remove the dirt.
2) Apply KYNAR to prevent blade flip.
[Check method]
Check to confirm that the OPC drum is free from fingerprints or oily dirt
and that the cleaning blade is completely cleaned by the following
method.
• Make a print of a half tone image on all the surface of A4 (11" x 8.5")
paper, and check the printed paper for any abnormality in the image.
2. Prior exposure prevention
Note:
• Avoid servicing in a place where there is strong light.
• Do not expose the unit to light for a long time.
• Cover the OPC drum with light-blocking material. (When using
paper, use about 10 sheets of paper to block light.)
[Countermeasures]
If the OPC drum is erroneously exposed to light too much (prior expo-
sure), perform the following countermeasures.
1) Print half tone images on the whole surface of A4 (11" x 8.5")
paper, and check to confirm that there is no irregular density area
in the previously exposed section.
2) Damages due to prior exposure may be recovered by keeping the
OPC drum for several hours. If, however, image are not recovered,
replace the OPC drum.
(1) Drum
Note: When installing the process unit in the main unit after replacing
the drum, process unit may not be able to install by reason of the
drum drive coupling position.
In this case, rotate the drum about 45 degrees and install again.
(2) Drum section
a. Main charger
b. Cleaning blade
c. Drum frame unit
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