Registration Motor Control Circuit - Toshiba e-STUDIO555 Service Manual

8.7

Registration motor control circuit

The registration motor is a stepping motor driven by the control signal output from the main CPU on the
LGC board and rotates the registration roller.
The main CPU outputs each phase signal (RGTA-0, RGTB-0, RGTC-0, RGTD-0) to the motor driver.
The motor driver converts this phase signal into a +24 V pulse signal (RGTA-0A, RGTB-0A, RGTC-0A,
RGTD-0A) and outputs it to the motor. Also, the rotation speed of the motor can be switched by
changing the output timing of each phase signal.
LGC board
RGTVR-0
IC58
Main CPU
Registration motor drive signal
Signal
RGTA-0
RGTB-0
RGTVR-0
RGTC-0
RGTD-0
Pulse signal L
H
© 2009 - 2011 TOSHIBA TEC CORPORATION All rights reserved
+5VB
Q56
SG
RGTA-0
Motor driver
RGTB-0
RGTC-0
RGTD-0
Fig. 8-10
Motor status
Rotation when accelerating/
decelerating
Rotation at a constant speed
8 - 15
RGTA-0A
RGTB-0A
IC82
RGTC-0A
RGTD-0A
Registration
motor
e-STUDIO555/655/755/855
PAPER FEEDING SYSTEM
8