Control Circuit Of Exit Motor - Toshiba e-STUDIO200L Service Manual

14.3 Control Circuit of Exit Motor

The following is the control circuit of the exit motor.
The exit motor is a stepping motor. The motor is turned ON/OFF and the direction of its rotation is
switched by controlling the output timing of pulse signal (A0·A1·B0·B1).
VREF is the reference voltage for the current control of the motor.
LGC board
PG10
PG11
Engine-
CPU PG12
PG13
IC22
DICH1
ASIC
CLKCH1
LDCH1
IC24
© 2004 - 2008 TOSHIBA TEC CORPORATION All rights reserved
DI
D/A
CK
converter
LD
IC52
Fig. 14-2
14 - 3
EXTMA-0
A A0
EXTMB-0
B A1
EXTMC-0
AB B0
EXTMD-0
BB B1
Exit Motor
VREF
STK672
IC50
e-STUDIO200L/202L/203L/230/232/233/280/282/283
PAPER EXIT SECTION
EXTMA
EXTMC
EXTMB
EXTMD
14