Sharp AR-M550N Service Manual page 128

8) Remove the MG roller unit.
9) Remove the doctor attaching plate.
10) Remove the MG holders F and R.
a-4. Side Seals F and R
1) Take out the developing tank.
2) Remove the doctor cover.
3) Peel off the right and left side seals.
4) Clean the peeled area.
5) Peel off the new right and left seals from the mounting paper and
affix in the designated positions.
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 73
a-5. Toner concentration sensor
1) Remove the developing tank. (See "a. Developing unit" in this sec-
tion)
2) Remove the DV cover. (See "a-1. Developer" in this section)
3) Remove the toner concentration sensor.