[E] Stack transport motor drive circuit

The stack transport motor drive circuit controls the rotation and stoppage, rotational direction and motor current of the stack transport motor.

The stack transport motor is driven by pulse signals (MOT8-OUT1A, MOT8-OUT1B, MOT8-OUT2A and MT8-OUT2B) output from the motor driver (IC38) under the command of a clock signal (TIOCA3),

arotational direction signal (MOT8-DIR) and current setting signals (MOT8-CUR1 and MOT8-CUR0) from the CPU of the finisher control PC board, and thus this motor rotates the stack transport belt.

TIOCA3

MOT8-

MOT8-

MOT8-

Motor rotation

Remarks

DIR

CUR1

CUR0

 

 

 

Clock signal

H

L

H

Normal (Low power)

Not used.

Clock signal

H

L

L

Normal (Normal power)

 

Clock signal

L

L

H

Reverse (Low power)

Paper is transported to the movable tray.

Clock signal

L

L

L

Reverse (Normal

 

 

 

 

 

power)

 

-

-

H

-

Stop

 

Finisher control PC board

 

 

 

 

 

 

 

 

 

 

 

 

3.3V

VM

 

 

 

 

 

P-RESET

5

 

 

24

 

MOT8-OUT1A

 

 

 

 

 

 

 

 

 

P-RESET

13

 

 

 

 

 

 

IC21

 

 

 

 

 

1

 

MOT8-OUT2A

 

 

 

 

 

 

 

 

 

 

 

TIOCA3

 

16

IC38

 

CN17

 

Stack

CPU

 

 

 

 

 

transport motor

 

MOT8-DIR

20

Motor driver

21

 

MOT8-OUT1B

(M8)

 

 

 

 

 

 

 

 

MOT8-CUR0

Current

 

 

 

 

 

 

 

 

 

17

 

 

4

 

MOT8-OUT2B

 

 

MOT8-CUR1

control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

circuit

 

 

 

 

 

 

 

 

 

 

 

 

SG

 

 

 

 

 

 

 

 

 

Fig. 3-32

 

 

 

3

© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved

MJ-1103/1104

 

DESCRIPTION OF OPERATIONS

3 - 27

Page 55
Image 55
Toshiba MJ-1103, MJ-1104 service manual Stack transport motor drive circuit, Not used