Sharp Mx-b200 Service Manual

MX-B200  OPERATIONAL DESCRIPTIONS  7 - 6
(2) Manual multi paper feed operation
1) Before paper feed operation, the manual paper feed solenoid
(MPFS) is turned OFF as shown in the figure below.
2) When the Start key is pressed, the manual paper feed solenoid
(MPFS) turns on to disengage the manual paper feed latch.
A from the manual paper feed clutch sleeve A, rotating the
manual paper feed roller and the manual take-up roller. At the
same time, the manual paper feed stopper opens and the man-
ual take-up...

MX-B200  OPERATIONAL DESCRIPTIONS  7 - 7
(3) Conditions of occurrence of paper misfeed
a. When the power is turned on:
PPD or POD is ON when the power is turned on.
b. Copy operation
6. SPF section (Option)
A. Outline
It automatically copies up to 50 sheets of documents of a same
size. (Only one set of copies)
B. Document transport path and basic 
compositionC. Operational descriptions
a PPD1 jam PPD1 does not turn off within 4 sec after 
turning on the resist roller.
b PPD2 jam PPD2 is off immediately...

MX-B200  OPERATIONAL DESCRIPTIONS  7 - 8
Time chart
SPF JAM generation condition
1) When SPPD is ON (document remaining) in initializing
2) When SPPD is not turned ON within about 1.5 sec (at 100% copy) after starting the document feed operation.
3) When SPPD is not turned OFF within about 4.7 sec (at 100% copy) after turning on SPPD.
4) When the OC cover is opened during document transport (during SPF motor rotation) (The SPF motor is stopped during document trans-
port, but the OC cover open error...

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 1
[8] DISASSEMBLY AND ASSEMBLY
The disassembly and assembly procedures are described for the
following sections:
1. High voltage section
2. Operation panel section
3. Optical section
4. Fusing section
5. Tray paper feed/transport section
6. Manual paper feed section
7. Rear frame section
8 Power section
9. Reverse roller section
10. SPF section (Option)
1. High voltage section
A. List
B. Disassembly procedure
1) Press the side cover open/close button and open the...

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 2 2) Clean the TC front guide and the TC holder with alcohol.
3) Set the charger cleaner to the transfer unit, and move it recipro-
cally a few times in the direction of the arrow shown in the figure
below.
E. Charger wire replacement
1) Remove the TC cover and remove the screw.
2) Remove the spring and remove the charger wire.
3) Install a new charger wire by reversing the procedures (1) and
(2).
At that time, be careful of the following items.
 The rest of the...

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 3 2) Remove the screws (4 pcs.), the harness, and the operation
panel unit.
3) Remove four screws, and remove the operation cabinet.
4) Remove nine screws, and remove the operation PWB.
C. Assembly procedure
For assembly, reverse the disassembly procedure
3. Optical section
A. List
B. Disassembly procedure
1) Remove three screws, and remove the rear cabinet.
4) Remove the original cover.
5) Remove five screws. Remove the operation unit, and discon-
nect the...

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 4 10) Move the carriage to the position indicated on the figure.
11) Loosen the screw which is fixing the tension plate.
12) Move the tension plate in the arrow direction to release the ten-
sion, and remove the belt.
13) Remove the screw, and remove the rod stopper.
14) Remove the rod.
15) Lift the rear side of the carriage, remove the belt and the con-
nector, and remove the carriage.
C. Assembly procedure
CCD core
1) Insert the CCD-MCU harness into the CCD PWB...

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 5
4. Fusing section
A. List
B. Disassembly procedure
1) Remove the connectors (3 pcs.) of the rear cabinet.
2) Open the side cover, remove two screws, and remove the fus-
ing unit.
3) Cut the binding band, remove the screw, and remove the ther-
mistor.4) Remove the screw and remove the resistor.
Remove the screw and remove the U-turn guide.
Note:Check to confirm that the fusing lower earth spring (A) does
not extend over the fusing bearing (B) after tightening...

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 6 6) Remove the screw and remove the PPD2 sensor.
7) Remove the plate spring on the right and remove the heater
lamp.
8) When opening the fusing unit, slide the fusing lower earth
spring in the arrow direction, and open the unit.
If the fusing unit is opened without sliding the fusing lower earth
spring, the fusing lower earth spring is deformed.
If the fusing lower earth spring is once deformed, the earth
function may not work properly. Replace the deformed...

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 7 12) Remove the pressure roller,  and the spring.
Note:Apply grease to the sections specified with an asterisk (*).
Grease: JFE552 UKOG-0235FCZZ
Heat roller disassembly
(Continued from procedure 4).)
5) Remove screws, remove the fusing cover, and open the heat
roller section.
Note:When opening the fusing unit, be careful not to deform the
fusing lower earth spring as described in the item 8) of
Pressure roller section disassembly.
6) Remove the C-ring and the...