Toshiba E-STUDIO520 - Motor Control Circuit; New Toner Supply Motor Control Circuit

e-STUDIO520/600/720/850 DEVELOPER UNIT March 2005 © TOSHIBA TEC
12 - 8
12.4 Motor Control Circuit
12.4.1 New toner supply motor control circuit
The new toner supply motor, which is a DC motor driven by control signals from the main-CPU on the
LGC board, rotates the toner cartridge.
This motor is driven when the on/off signal (TNRMTON-0) output from the main-CPU moves to a high
level. The motor rotation direction switching signal (TNRMTCW-0) switches the rotational direction of
this motor.
Fig.12-5
Driving signal of new toner supply motor
(L: Low level, H: High level)
Signal
Motor Status
TNMTON-0 TNMTCW-0
L - Off
H L Reverse rotation (detecting cartridge installation)
H H Forward rotation (when supplying toner)
IC58
Main CPU
New toner
supply motor
TNMTON-0
TNMTCW-0
IC103
Buffer
Q64
LGC board
+5VSW
SG