Sharp Mx-b200 Service Manual

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 8
5. Tray paper feed/transport section
A. List
B. Disassembly procedure
1) Remove two screws, and remove the hinge guide R.
2) Disconnect the connector. (2 positions)
3) Remove five screws, and remove the scanner unit.
4) Remove the fan duct.
5) Remove each connector and six screws, and remove the MCU
PWB. (The shape of the MCU PWB differs depending on the
model.)6) Remove the PWB insulation mylar and remove the paper trans-
port detection sensor (POD).
7) Remove two springs and open the intermediate frame unit.  No. Part name Ref.
1 PPD1 sensor PWB
2 POD sensor PWB
3 LSU unit
4 Intermediate frame unit
5 Paper feed roller
2)
2)
1)
2)2)
2)2)2)
3)
3)
2)
1)
1)
1)
2)
2)
2)
2)
1)
1)
2)
1)
1)
2) 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 9 8) Remove the pulleys on the both sides and remove the paper
exit roller.
9) Disengage the pawl, and remove the roller knob.
10) Disengage the pawl, and shift the pulley and the bearing.11) Remove the paper exit roller, and remove the belt, the pulley,
and the bearing.
12) Remove the harness guide.
13) Remove two screws and remove the toner motor.
4)
2)
1)
3)
1\)
2\)3\)
4\)
1\)
2\)
1\)2\) 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 10 14) Remove five screws and the grounding wire, and remove the
main drive unit.
15) Remove the parts as shown below, and remove the pressure
release solenoid and the paper feed solenoid.16) Remove four screws, and remove the paper guide unit. 
17) Remove four screws, and remove the LSU unit.
[Note for assembling the LSU]
When installing the LSU, turn the LSU clockwise and fix with
screws in order to provide an attachment backlash in the proper
direction.
Observe the following sequence of fixing screws.
1)
2)
1)1) 1)
CAUTION:Attach the gears securely
3)
3)
1)
1)
2)
2)
4) 4)
2)
1)
1)
1)
1)1)
1)
2) 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 11 18) Remove the screw, slide the left cabinet to the left to detach it.
Remove each pawl, and remove the paper exit tray.
19) Remove two screws and remove the fusing connector.
20) Remove five screws and the connector, and lift the intermediate
frame unit to remove.21) Remove the screw and the E-ring, and remove the PS semi-cir-
cular earth plate and the PS roller unit.
22) Remove the E-ring and remove the spring clutch from the PS
roller unit.
23) Remove three screws and remove the TC front paper guide.
5)
1)2)
3)
4)
2)2)
3)
4)
1)
5)
4)
4)
1)
2)
3)
PS roller unit
PS semi-circuler
earth plate
5)
4)
4)
1)
2)
3)
PS semi-circular
earth plate
Use grease of 
Floil FG40H 
only to apply to 
this section. 
1)
2) 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 12 24) Remove the screw and the connector, and remove the PPD1
sensor PWB.
25) Remove two E-rings and remove the paper feed roller.
26) Remove three E-rings and remove the clutch unit.
C. Assembly procedure
For assembly, reverse the disassembly procedure.
6. Manual paper feed section
A. List
B. Disassembly procedure
Multi unit
1) Remove the screw and remove the multi upper cover.
2) Remove the screw and remove the side door detection unit.
1)
2)
4)
5)
1)
2) 3)
4)
Back
Front
Clutch unit
Paper feed
roller
No. Part name Ref.
1 Manual transport roller
2 Cassette detection switch
3 Side door detection unit
2)
1)
1)
2)
Back Wire treatment 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 13 3) Remove three screws and remove the multi paper feed upper
frame.
4) Remove two screws and remove the multi feed bracket unit
from the multi paper feed upper frame.5) Remove three E-rings and remove the manual paper feed roller
B9.
6) Remove the pick-up roller.
1)
2)
1)
2)
2)1)
1)
2) 1)
1)
1)
3)
LOCK
TOK
2)1) 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 14 7) Cut the binding band and remove the multi paper feed solenoid.
C. Assembly procedure
For assembly, reverse the disassembly procedure.
D. Pressure plate holder attachment
1) Attach the pressure plate holder so that the resin section is not
covered with the seal M1-N.
7. Rear frame section
A. List
B. Disassembly procedure
1) Remove three screws, and remove the rear cabinet.
2) Disconnect the connector.
3) Remove two screws, and remove the scanner motor.
4) Remove two screws and one harness, and remove the main
motor.
1)
2)
3)Multi paper feed
solenoid
Pressure plate
holder
Seal M1-N
Attachment
reference
Attachment
reference
No. Part name Ref.
1 Scanner motor
2 Main motor
3 Exhaust fan motor
4 Main PWB
1)
2)
3)
1)
2)
3) 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 15 5) Remove two screws and one connector, and remove the
exhaust fan motor.
6) Disconnect the connectors.
7) Remove the five screws, and remove the MCU PWB. (The
shape of the MCU PWB differs depending on the model.)
C. Assembly procedure
For assembly, reverse the disassembly procedure.
8. Power section
A. List
B. Disassembly procedure
1) Disconnect each connector.
2) Remove the screw, and remove the earth line.
3) Remove two screws, and remove the power PWB unit.
C. Assembly procedure
For assembly, reverse the disassembly procedure.
9. Reverse roller section
A. List
B. Disassembly procedure
1) Remove four screws.
2) Remove the spring, and the earth wire.
3) Remove the reverse unit.
C. Assembly procedure
For assembly, reverse the disassembly procedure.
1)
2)
3)
Blowing direction
3)
1)
1)1) 1)
1)
2)
2)
1)
No. Part name Ref.
1Power PWB
No. Part name Ref.
1 Reverse roller
1)1)1)1)
2)
3)
4)
4)5)
1)
1 2
3 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 16
10. SPF section (Option)
(1) Rear cabinet disassembly
1) Remove four screws, and remove the rear cabinet and the rear
cabinet cover.
(2) Remove the SPF.
1) Remove two screws, and remove the earth wire.
2) Disconnect the connector.
3) Remove the SPF unit.
A. SPF motor
1) Remove the screw.
2) Disengage the pawl (3 positions).
3) Remove the rear cabinet.
1) Remove the screw, and remove the harness.
2) Remove three screws.
3) Disengage the pawl (4 positions).
4) Remove the transport unit.
1) Remove two screws, and remove the earth wire.
2) Remove the SPF motor unit.
3) Disconnect the connector. No. Part name Ref.
A SPF motor
B Pick-up roller, paper feed roller
C Paper exit roller
D Set sensor, scan front sensor
E Transport roller
1)
1)
2)
2)
1)
1) 2)
3)1)
3)
2)
2)
1)
2)
2)
3)
3)
1)
4)
1) 2)
1)
1)
3) 
						

							MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 17 1) Remove two screws.
2) Remove the SPF motor.
B. Pick-up roller, paper feed roller
1) Remove two gears.
1) Open the upper door.
2) Remove two E-rings, and remove the spring, the arm, and the
bearing.
3) Remove the pick-up roller unit.1) Remove the shaft.
2) Remove the paper feed roller.
3) Remove the bearing and the spring.
1) Remove the pick-up roller.
2) Remove the gear.
C. Paper exit roller
1) Remove four gears.
2) Remove two screws.
3) Remove the frame.
1)
2)
1)1)
1)2)
2)
2)
2)
3)
1)
2)
3)
1)
2)
1) 2)2)
3)
1)