Toshiba e-studio281c, Service Manual, Page: 222 / 414

e-STUDIO281c/351c/451c © 2005 - 2008 TOSHIBA TEC CORPORATION All rights reserved
PAPER FEEDING SYSTEM
10 - 8
10.5 Drive Circuit of Tray-up Motor
Tray-up motor (M10): Driven by motor driver (TA8428) (upper/lower drawer)
Block diagram of TA8428
Fig. 10-6
IN1 and IN2 are input terminals to receive the signals from the gate array. The control logic, based
on the signals from the gate array, controls ON/OFF of the motor rotation direction.
Input Output
Remarks
IN1 IN2 M(+) M(-)
H H L L BRAKE
L H L H CCW
H L H L CW
L L OFF (high impedance) STOP
1 2 3 4 5 6 7
IN1 IN2 M(+)
TUP1A
GND M(–)
TUP2A
N.C. Vcc
Thermal shut-down
overcurrent
protection circuit
Control logic