Drive Circuit Of Tray-Up Motor - Toshiba e-STUDIO281c Service Manual

10.5 Drive Circuit of Tray-up Motor

Tray-up motor (M10): Driven by motor driver (TA8428) (upper/lower drawer)
Block diagram of TA8428
Thermal shut-down
overcurrent
protection circuit
Control logic
1
IN1
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
IN1
H
L
H
L
e-STUDIO281c/351c/451c
PAPER FEEDING SYSTEM
2 3
M ( + )
IN2 GND
TUP1A
Fig. 10-6
IN2 M(+)
H
H
L
L
10 - 8
4 5
M (–)
N.C.
TUP2A
Output
M(-)
L L
L H
H L
OFF (high impedance)
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6 7
Vcc
Remarks
BRAKE
CCW
CW
STOP