Sharp MX-3500N Service Manual page 397

* When replacing developer, use an extreme care not to drop
developer on the drive section (marked with
* (Note for cleaning the developing unit)
If the developing unit is cleaned with a cleaner or an air
blower with much developer in the developing unit, static
electricity may be accumulated in the unit. In order to pre-
vent against this, note the following items.
* If metal part is brought into contact with the magnet roller sur-
face when transporting developer or removing foreign material
from the magnet roller, developer may adhere to the magnet
roller surface. Be careful to avoid this when handling the mag-
net roller.
* Remove developer in the developer unit as well as developer
attached to the magnet roller as far as possible.
* (When cleaning the developing unit with an air blower [duct])
Before cleaning with an air duct, remove developer from the unit
as far as possible, and ground the magnet roller rear side cored
bar as shown in the figure below and clean the unit with an air
blower. (Do not pinch the grounding wire with a crocodile clip
connector in order to prevent against damage on the cored bar.)
* When supplying developer, do not tilt the developing unit.
).
Magnet roller
rear side cored bar
MX3500N DEVELOPING SECTION K – 4
b. DV seal
c. DV side seal F
d. DV side seal R
1) Remove the old DV seal (A), DV side seal F (B), R (C).
C
2) Attach the new DV seal, DV side seal F (B), DV side seal R (C)
to the reference position.
0.3mm
0
0.3mm
0
0.3mm
0
B
e. DV initial PWB
f. Density sensor
1) Remove the developing unit.
2) Remove the screw, and remove the DV guide. Disconnect the
connector, and remove the DV initial PWB (A).
Remove the screw, and diisconnect the connector, and
remove the density sensor (B).
B
A
B
A
0 0.3mm
A
0 0.5mm
C
0 0.3mm