Toshiba E-STUDIO520 - Tray-Up Motor Control Circuit

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March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 PAPER FEEDING SYSTEM
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9.4 Tray-up motor control circuit
The tray-up motor is a DC motor driven by the control signal output from the PFC CPU on the LGC
board and moves up the tray in each drawer.
The motor driver outputs the drive signal (PUTRM-0/1A, PLTRM-0/1A) to the motor based on the con-
trol signal (PUTRM-0/1, PLTRM-0/1). The motor operates the forward rotation, reverse rotation, brake
or stop according to the status of these drive signals.
Fig.9-7
Tray-up motor drive signal
Signal
Motor Status
PFC CPU output Motor driver output
PUTRM-0
PLTRM-0
PUTRM-1
PLTRM-1
PUTRM-0A
PLTRM-0A
PUTRM-1A
PLTRM-1A
L L OFF (high impedance) OFF
L H L H Forward rotation (CW)
H L H L Reverse rotation (CCW)
H H L L Brake
IC57
PFC CPU
PUTRM-0
Tray-up motor-1
PUTRM-1
PUTRM-0A
PUTRM-1A
IC72
Motor driver
LGC board
+24VC
DG
PLTRM-0
Tray-up motor-2
PLTRM-1
PLTRM-0A
PLTRM-1A
IC36
Motor driver
+24VC
DG