Sharp MX-4100N Service Manual page 330

1) Open the front cover.
2) Remove the waste toner box.
3) Remove the LSU cleaning rod from the front cover.
1
2
MX-5001N MAINTENANCE 8 – 15
4) Insert the LSU cleaning rod into the insertion port to which the
cleaning guide label is attached so that the cleaning base (A)
is under the cleaning rod (B). Move the cleaning rod back and
forth 2 or 3 times to clean the dust proof glass.
Maintenance: Clean at every 150K.
A
B
5) Remove the cleaning base from the LSU cleaning rod.
Maintenance: Replace at every 150K.