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MX-B200  OPERATIONAL DESCRIPTIONS  7 - 6

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 roller is pressed to the surface of the paper to start
paper feeding.

3) When pawl C of the manual paper feed clutch sleeve is

engaged with the manual feed latch, the manual feed stopper
falls and the manual take-up roller rises. At that time, the man-
ual paper feed roller is rotating.

4) The lead edge of the transported paper is pressed on the resist

roller by the transport roller. Then the paper is stopped tempo-
rarily to allow synchronization with the lead edge of the image
on the OPC drum.
From this point, the operation is the same as the paper feed
operation from the tray. (Refer to 7-5 - 8.)

5) The solenoid turns off to close the gate and return to the initial

state.

OF

MPFS

F

C

A

ON

MPFS

A

C

ON

MPFS

A

C

OF

MPFS

F

A

C

MX-B200  OPERATIONAL DESCRIPTIONS  7 - 7

It automatically copies up to 50 sheets of documents of a same
size. (Only one set of copies)

a

PPD1 jam

PPD1 does not turn off within 4 sec after 
turning on the resist roller.

b

PPD2 jam

PPD2 is off immediately after turning on the 
resist roller.

PPD2 does not turn off within 1.2 sec after 
turning off the resist roller.

c

POD jam 

POD does not turn on within 2.9 sec after 
turning on the resist roller.

POD does not turn off within 1.5 sec - 2.7 sec 
after turning off PPD2.

1

Pickup roller

2

Sheet of document for paper feed

3

Set detection ACT

4

Document feed roller

5

Separation sheet

6

Paper entry sensor

7

PS roller D

8

Transport follower roller

9

Paper exit roller

10

Paper exit follower roller

11

Document tray

11

1

9

3 4

5

2

10

6

7

8

SPID ON

PSW ON

MRMT rotation

MM rotation

CPFS ON

SPFM rotation

Document set

Document set sensor

Document feed unit lamp ON

PPD ON

RRC ON

SPPD ON

POD ON

Copy start

The scanner is shifted
to the exposure position.

(Copier side)

Main motor rotation

Paper feed

Synchronization

(Transfer)

(Fusing)

(Document exit)

Paper transport

(Exposure)

In the zooming mode, the magnification ratio in the sub 
scanning direction (paper transport direction) is adjusted
by changing the document transport speed.

(Paper exit)

SPF motor rotation

Document transport sensor

Document transport

(SPF side)

MX-B200  OPERATIONAL DESCRIPTIONS  7 - 8

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 occurs instead of the SPF JAM.)

SPF open/close detection (book document) detection is performed by detecting the interval between the reference lines on the white Mylar
attached to the paper exit guide (document scanning section) by the scanner (CCD) and detecting the varied quantity.

Note: When replacing the carriage unit, be sure to execute SIM41-06.

If SIM41-06 is not executed, the carriage unit may not read the reference line on the white Mylar, preventing the document from being fed.

PSW

MRMT

SPF M

CL

SPPD

260ms

182ms

SCANST

MAIN M

CPFS1

RRS

PPD1

PPD2

POD

B

A

B

A

A - B = Varied quantity of pixels

(pixel)

(Floating)

(White Mylar)

(CCD)

Reference line

Reference line

MX-B200    DISASSEMBLY AND ASSEMBLY  8 - 1

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) Press the side cover open/close button and open the side

cover.

2) Push up the lock pawls (2 positions) of the side cover, and

remove the transfer charger.

For assembly, reverse the disassembly procedure.

1) Remove the charger cleaner from the manual paper feed unit.

No.

Part name Ref.

1

Transfer charger unit

2

Charger wire

Transfer
charger

Lock pawl rear

Lock pawl front

1)