Sharp MX-4100N Service Manual page 325

(Note for servicing the DV roller)
1. Prevent roller contamination
[Note]
• Be careful not to attach fingerprints or oily dirt on the DV roller
surface.
• When rotating the DV roller manually, hold the drive gear section
to rotate it.
Rotate this section manually.
[Countermeasures]
If a fingerprint is attached to the DV roller surface erroneously, per-
form the following countermeasures.
1) Remove developer material from the developer unit and the
developer mag roller.
2) Remove oily dirt on the DV roller with alcohol.
3) When alcohol dries completely, supply developer and perform
SIM 25-02.
[Check method]
Check to confirm that the DV roller is free from fingerprints or oily
dirt and that cleaning is completely executed or not 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.
1) Remove the front cabinet.
2) Remove the waste toner box.
3) Check that the lock is released as shown in (A).
Loosen the blue screw, and open the drum positioning unit.
* When the lock is not released, use a screwdriver to turn the
screw (B) counterclockwise so that it is fit as (A).
4) Open the DV lock lever, and release the fixing screw.
(1position for each color)
5) Pinch the knob and remove the development unit.
MX-5001N MAINTENANCE 8 – 10
2
A
1
2
1
B