Sharp MX-1800N (serv.man36) Service Manual ▷ View online
MX-1800N DRIVE SECTION P – 1
MX-1800N
Service Manual
[P] DRIVE SECTION
1. Disassembly and assembly
A. Main drive section
(1) Main drive unit
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Remove the screws, and open the control box.
3)
Remove the flywheel.
* Installing sequence: (1) C
* Installing sequence: (1) C
→ (2) KM → (3) KM (Each color is
marked.)
* After installation, check to confirm that it is not in contact
with the harness, etc.
4)
Remove the connectors.
5)
Remove the screws, and remove the main drive unit.
* Hold section A and remove.
* Hold section A and remove.
Unit
Parts
(1)
Main drive unit
a
Toner motor
b
Developer drive motor (K)
c
Developing drive motor (CL)
d
Drum motor (K)
e
Drum motor (CL)
f
Resist motor
g
Phase detection PWB
h
Separation clutch
(1)-a
(1)-a
(1)-c
(1)-e
(1)-g
(1)-d
(1)-g
(1)-b
(1)-a
(1)-f
(1)-h
(1)-a
(1)
C
KM
KM
A
MX-1800N DRIVE SECTION P – 2
a. Toner motor
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Open the control box.
3) Remove the connector and the screws, then remove the toner
3) Remove the connector and the screws, then remove the toner
motor.
b. Developer drive motor (K)
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Open the control box.
3) Remove the flywheel.
4) Remove the connector and the screws, then remove the devel-
3) Remove the flywheel.
4) Remove the connector and the screws, then remove the devel-
oper drive motor (K).
c. Developing drive motor (CL)
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Open the control box.
3) Remove the flywheel.
4) Remove the connector and the screws, and remove the devel-
3) Remove the flywheel.
4) Remove the connector and the screws, and remove the devel-
oper drive motor (CL).
* When installing, tighten the screws in section (A).
* When installing, tighten the screws in section (A).
d. Drum motor (K) /
e. Drum motor (CL)
1)
1)
Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
Outfit Section.)
2)
Open the control box.
3)
Remove the flywheel.
4)
Remove the connector and the screws, then remove the drum
motor (K) and the drum motor (CL).
motor (K) and the drum motor (CL).
f. Resist motor
1)
1)
Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
Outfit Section.)
2)
Open the control box.
3)
Remove the flywheel.
4)
Remove the connctor and the screws, then remove the resist
motor.
motor.
g. Phase detection PWB
1)
1)
Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
Outfit Section.)
2)
Open the control box.
3)
Remove the flywheel.
4)
Remove the screws, and remove the phase detection PWB.
Disconnect the connector.
Disconnect the connector.
A
A
A
A
B
MX-1800N DRIVE SECTION P – 3
h. Separation clutch
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Open the control box.
3) Remove the flywheel.
4) Remove the gear, and remove the separation clutch. Then dis-
3) Remove the flywheel.
4) Remove the gear, and remove the separation clutch. Then dis-
connect the connector.
* When installing, check to insure that the clutch rotation-stop
* When installing, check to insure that the clutch rotation-stop
projection is engaged with the sub frame projection.
B. Paper feed drive section
(1) Paper feed drive unit
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Open the control box.
3) Remove the connector, the screws and the grounding terminal,
3) Remove the connector, the screws and the grounding terminal,
then remove the driver main PWB unit.
4)
Remove the connector and the screws. Release the pawl, then
remove the filter box unit.
remove the filter box unit.
5)
Remove the connector and remove the paper feed drive unit.
a. Transport motor
1)
1)
Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
Outfit Section.)
2)
Open the control box.
3)
Remove the connector and the screws, then remove the trans-
port motor.
port motor.
Unit
Parts
(1)
Paper feed drive unit
a
Transport motor
b
Paper feed motor
c
Paper tray lift-up motor
d
Paper feed clutch (Paper feed tray 1)
e
Paper feed clutch (Paper feed tray 2)
f
Tray vertical transport clutch
(1)-a
(1)-b
(1)-c
(1)
(1)-d
(1)-f
(1)-c
(1)-e
MX-1800N DRIVE SECTION P – 4
b. Paper feed motor
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Open the control box.
3) Remove the driver main PWB unit.
4) Remove the filter box unit.
5) Remove the connector and the screws, then remove the paper
3) Remove the driver main PWB unit.
4) Remove the filter box unit.
5) Remove the connector and the screws, then remove the paper
feed motor.
c. Paper tray lift-up motor
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
1) Remove the rear cabinet. (Refer to Rear Cabinet in External
Outfit Section.)
2) Open the control box.
3) Remove the driver main PWB unit.
4) Remove the filter box unit.
5) Remove the connector and the screws, then remove the paper
3) Remove the driver main PWB unit.
4) Remove the filter box unit.
5) Remove the connector and the screws, then remove the paper
tray lift-up motor unit.
6) Disengage the pawl, and remove the lift-up coupling.
d. Paper feed clutch (Paper feed tray 1)
1)
1)
Remove the paper tray lift-up motor unit.
2)
Remove the paper feed motor.
3)
Remove the paper feed drive unit.
4)
Remove the connection gear 21T. Remove the screws to
detach the drive frame upper unit.
detach the drive frame upper unit.
5)
Disconnect the connector, and remove the paper feed clutch
unit.
unit.
6)
Remove the E-ring, and remove the paper feed clutch.
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