Sharp MX-M550U Service Manual page 343

a. OPC drum
1) Disconnect the connecters.
2) Remove the blue screw to open the lower frame.
3) Gently remove the drum, guide and all.
4) Remove the guide.
* The OPC layer of a certain area of the OPC drum may break
off due to rotational friction. The OPC layer break-off gener-
ated in the area shown below will not affect print images.
Therefore, the drum can be used without replacement.
14mm
* When replacing the OPC drum, apply friction-reducing pow-
der (UKOG-0309FCZZ) to all over the drum (F and R) in
order to reduce friction and membrane decrease of the OPC
layer on both sides of the OPC drum. (Use PARTEL
(UKOG-0311FCZZ).)
12mm
MX-M700N PHOTOCONDUCTOR SECTION J – 5
b. Separation pawl
1) Remove the OPC drum. (See "a. OPC drum")
2) Remove the resin E-ring.
3) Remove the separation pawl.
c. Cleaning blade
1) Remove the OPC drum. (See "a. OPC drum")
2) Remove the cover.
3) Remove the cleaning blade.
d. Toner reception seal
1) Remove the OPC drum. (See "a. OPC drum")
2) Remove the toner receiving seal.