2. Scanning Motor Control Circuit
The scanning motor (M2) is a 4-phase control stepping motor.
Figure 3-302 is a block diagram of the circuit used to control the scanning motor, and
the circuit has the following functions:
q
Turning on and off the motor.
w
Controlling the rotation of the motor.
e
Controlling the speed of the motor.
r
Stabilizing the motor.
Figure 3-302
CHAPTER 3 EXPOSURE SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-7
Drive circuit
-5A
-3
SCM1
-6A
-2
SCM2
SCA
*
SCB
*
-3A
-5
SCCLK
-4A
-4
SCMD
*
-1A
-7
SCRET
-7A
-1
SCVREF
-2A
-6
SCRON
DC
controller
PCB
Motor driver 1 PCB
±5V
±24VB
Scanning motor
SCA
SCB
M2
J106
J202
Содержание NP6330
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