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e-STUDIO3511/4511 PAPER FEEDING SYSTEM 10 - 10 November 2003 © TOSHIBA TEC
10
1 2 3 4 5 6 7
IN1 IN2 M(+)
TUP1A
GND M(–)
TUP2A
N.C. V
CC
10.3 Drive Circuit of Tray-up Motor
Tray-up motor (TRY-MTR) : Driven by IC6 (upper/lower drawer) (LGC: TA8428)
Block diagram of TA8428
Fig. 10-301
IN1 and IN2 are input terminals to receive the signals from the microcomputer. The control logic, based
on the signals from the microcomputer, controls ON/OFF of the motor rotation direction.
Input Output
IN1 IN2 M (+) M (–)
Remarks
H H L L BRAKE
L H L H CCW
HL H LCW
L L OFF (high impedance) STOP
Control logic
Thermal shut-down
overcurrent
protection circuit