Sharp MX-4100N Service Manual page 482

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)
2
5) Pinch the knob and remove the development unit.
A
B
1
MX-5001N DEVELOPING SECTION K – 3
(1) Density sensor
1) Remove the developing unit.
2) Remove the screw, and remove the DV guide.
Remove the screw, and disconnect the connector.
Remove the density sensor.