Toshiba MJ-1104 Service Manual page 68

[F] Additional folding motor drive circuit
The additional folding motor drive circuit controls the rotation and stoppage, rotational direction and
motor current of the additional folding motor.
The additional folding motor is a DC motor which is driven by rotation control signals (DM4-CNT1 and
DM4-CNT0) from the CPU of the saddle control PC board, and thus this motor performs a additional
folding operation.
DM4-CNT1 DM4-CNT0
L H
H L
H H
L L
For the case when an overcurrent status is detected, a protection circuit is mounted to turn the addi-
tional folding motor off.
Saddle control PC board
DM4-CNT0
DM4-CNT1
IC31
CPU
MJ-1103/1104
DESCRIPTION OF OPERATIONS
Motor rotation
Normal Operates the additional folding.
Reverse Operates the additional folding
Stop
Stop Not used.
5VPA VM
Motor drive circuit
Overcurrent
protection circuit
Fig. 3-46
3 - 40
Remarks
DM4-F
DM4-R
© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
Additional
folding
(M20)