AR-M351U, AR-M451U (serv.man11). Maintenance details of following sections, 1-Process - Sharp Copying Equipment Service Manual (repair manual). Page 6

AR-M351U/M451U, AR-M355U/M455U  MAINTENANCE AND DETAILS OF EACH SECTION  7 - 9

1) Remove the drum cartridge.

2) Check to confirm that the cleaning unit is inserted fully to the

bottom. 

3) Remove the pawl, and remove the MC unit. 

∗

For cleaning the MC unit (charging plate), reciprocate the clean-
ing unit back and forth 3 times or more.

1) Remove the drum cartridge.

2) Loosen the screw, and remove the drum boss mounting plate.

3) Remove the drum, and remove the DSD collar.

∗

When removing the drum, place the drum cartridge as shown in
the figure and remove the drum.

∗

When replacing the OPC drum, clear the following counters.

• Drum rotating time

• Drum counter

∗

When installing a new drum, apply starting powder.

∗

When installing, install the DSD collar R to the drum frame, then
install the drum and the DSD collar F. When installing the DSD
collar, engage the DSD collar boss with the drum frame hole.

1) Remove the drum cartridge.

2) Remove the screw, and remove the drum separation pawl

unit.

∗

When handling the separation pawl, be careful not to break or
scratch the tip of the separation pawl and keep it away from dirt. 

After installing the drum separation pawl unit, push the separation
lever and check to confirm that the separation pawl operates nor-
mally.

1) Remove the drum cartridge.

2) Remove the drum and the DSD collar.

3) Remove the drum separation pawl unit.

4) Remove the screw, and remove the toner reception seal.

∗

When installing the toner reception seal, tighten the screw (a)
on the positioning side for the first time. Check to confirm that
the process earth plate and the toner reception seal are conduc-
tive. (10

Ω

 or less)

(a)