Scanning Drive Circuit - Toshiba e-STUDIO350 Service Manual

6.3.2 Scanning drive circuit

The scan motor is a 2-phase stepping motor and driven by the driver IC-STK-672-071 (IC16).
MOTREF
MOTCLK
Scanner MOTMD3
CPU
MOTMD2
MOTMD1
MOTDIR
MOTEN
MOTRST
RESET IC
SLG board
November 2003 © TOSHIBA TEC
+24V
GND
Voltage to set value for
motor current
Clock input
Excitation mode setting ( 3 )
Excitation mode setting ( 2 )
Excitation mode setting ( 1 )
Rotation direction setting
Cut off output
Reset
+5V
GND
Fig. 6-302
6 - 5
+24V
B
DG
+24V
B
A
Scan motor
VREF
+24V
A
CLK
M3
M2
M1
CWB
EN
RESET
+5V
GND
e-STUDIO350/450 SCANNER
M
6