Sharp MX-M550U Service Manual page 319

d. Resist roller (Drive)
1) Remove the resist roller unit. (See "(1) Resist roller unit")
2) Remove the follower roller and the tension spring.
3) Remove the cover on the front side.
4) Remove the transport roller 15.
5) Remove the paper guide.
6) Remove the E-ring, the gear, and the bearing.
7) Remove the coupling on the rear side.
8) Remove the resist roller (Drive).
MX-M700N PAPER TRANSPORT SECTION G – 10
e. Resist roller front paper pass detector
1) Remove the resist roller unit. (See "(1) Resist roller unit")
2) Remove the cover. (See "a. Resist roller (Idle)")
3) Remove the resist roller front paper pass detector.
(2) Others
a. Paper dust cleaner
1) Open the front cabinet. Open the process DV cover.
2) Remove the paper dust cleaner.