December 2002 TOSHIBA TEC 9 - 9 e-STUDIO160/200/250 PAPER FEEDING SYSTEM
9.6 Tray-up Motor Drive Circuit
Tray-up motor : Driven by IC4 (PWA-F-RLY : TA8428K)
The block diagram of TA8428K is shown below.
IN1 and IN2 are input terminals for the signals from the I/O port GA-1. In the control section, the motor is
controlled (ON and OFF) based on the signals from the I/O port GA-1. For the control, refer to the table
below.
1 2 3 4 5 6 7
IN1 IN2 M(+) GND M(–) N.C. V
CC
Control logic
Overheat
protection
circuit
Overcurrent
protection
circuit
IN1 IN2 M (+) M (-)
H H L L BRAKE
L H L H CCW (upward)
H L H L CW (downward)
L L OFF (high impedance) STOP
Input Output
Description
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