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MJ-1103/1104 © 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
DESCRIPTION OF OPERATIONS
3 - 34
[L] Stapler motor drive circuit
The stapler motor drive circuit controls the rotation and stoppage, rotational direction and motor current
of the stapler motor.
The stapler motor is a DC motor which is driven by rotation control signals (DM3-CNT1 and DM3-
CNT0) from the CPU of the finisher control PC board, and thus this motor performs a stapling opera-
tion. For the case when an overcurrent status is detected, a protection circuit is mounted to turn the sta-
pler motor off.
Fig. 3-39
[M] Reset circuit
The reset circuit generates a reset signal when the power is turned ON and when the power supply
voltage is lowered. When 5VPA voltage is 4.25V or lower, the reset IC (IC22) resets the CPU (IC21)
and Flash ROM (IC4) by determining that the output of pin 1 is at a low level.
Fig. 3-40
DM3-CNT0 DM3-CNT1 Motor rotation Remarks
H L Normal Operates the stapler.
L H Reverse Recovery operation
HH Stop
LL Stop
IC21
CPU
DM3-CNT0
DM3-F
VM5VPA
Stapler motor
(M13)
Motor drive circuit
Finisher control PC board
Overcurrent
protection circuit
DM3-R
DM3-CNT1
CN19
5VPA
IC22
RESET
1
2
5
SG