Developing Section - Sharp SF-2020 Service Manual

6-6. Cleaner blade (Replace every 50K copies.)
1
Remove the holder from the process unit. (3 blue screws)
2
Remove the cleaning blade. (3 blue screws)
6-7. Drum separation pawl (Replace every 50K
copies.)
Slide and remove the blue pin to remove the separation pawl.
Replace the star-shape washer with a new one if it is worn down.
6-8. Process control PWB (Clean the sensor
section every 50K copies.)
1
Remove the holder from the process unit (3 blue screws), and
remove the connector of the process control PWB.
2
Remove the holder of the process control PWB (2 screws), and
remove the PWB (2 screws).
6-9. Drum mark sensor PWB (Clean the sensor
section every 50K copies.)
Remove the holder from the process unit (3 blue screws), and
remove the marking sensor PWB. (1 screw).
6-10. Toner reception seal (Replace every 50K
copies.)
Remove the drum and remove two screws to remove the seal.

7. Developing section

A. DV side seals F/R replacement (Replace every 120K
copies.)
1
Remove two screws which are connecting the hopper section and
the developing unit, and separate them each other.
Fixing screw
2
Replace the developing unit side seals F/R as shown below.
(Side seal R attachment reference)
Note: Since the developing side seals are in the vicinity of the drum,
be careful of peeling off and defective attachment.
6 – 20
Fixing screw
Toner hopper
Developing unit
(Side seal F attachment reference)