[K] Movable tray shift motor drive circuit

The movable tray shift motor drive circuit controls the rotation and stoppage, rotational direction and motor current of the movable tray shift motor.

The movable tray shift motor is a DC motor which is driven by rotation control signals (DM1-CNT1 and DM1-CNT0) from the CPU of the finisher control PC board, and thus this motor shifts the movable tray in a hoisting movement. For the case when an overcurrent status is detected, a protection circuit is mounted to turn the movable tray shift motor off.

DM1-CNT0

DM1-CNT1

Motor rotation

Remarks

 

 

 

 

H

L

Normal

The movable tray unit is shifted to the lower side.

 

 

 

 

L

H

Reverse

The movable tray unit is shifted to the upper side.

 

 

 

 

H

H

Stop

 

 

 

 

 

L

L

Stop

 

 

 

 

 

Finisher control PC board

 

 

 

 

 

 

5VPA

VM

 

 

 

DM1-CNT0

 

 

 

DM1-F

 

IC21

Motor drive circuit

CN16

 

Movable tray

DM1-CNT1

 

 

shift motor

 

 

 

 

 

 

 

 

 

DM1-R

(M12)

CPU

 

 

 

 

 

 

Overcurrent

 

 

 

 

protection circuit

 

 

 

 

 

Fig. 3-38

 

 

 

3

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MJ-1103/1104

 

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Page 61
Image 61
Toshiba MJ-1103, MJ-1104 Movable tray shift motor drive circuit, Movable tray unit is shifted to the lower side, Stop