Canon D1 - Controls (Reader); Controlling the Scanner Drive System

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Technology > Controls (Reader)
Technology > Controls (Reader)
Controls (Reader)
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Controlling the Scanner Drive System
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Overview
Parts conguration of scanner drive is described below.
Forward
Backward
Sensor light
block plate
CCD HP sensor (SR1)
Scanner motor (M1)
CCD unit
Reader relay PCB (PCB1)
Copyboard cover
open/closed sensor (SR2)
Guide shaft
Carriage drive belt
Copyboard cover
open/closed sensor (SR3)
- Scanner motor (M1) drive signal
Turns on/off the motor and controls its direction/speed of rotation.
- CCD HP sensor (SR1) detection signal
Checks if CCD is at home position.
- Copyboard cover open/closed sensor (front: SR2/rear: SR3) detection signal
Detects the open/close status of the copyboard cover
F-2-4
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Scanner Motor Control
Scanner motor driver turns on/off the motor and controls its direction/speed of rotation
according to the signals from CPU.
Main controller PCB 2
3.3V +24V
OPM_ENB
OPM_CLK
OPM_CWB
MOT_VREF
+5V
B*
B
A
A*
CPU
Motor
driver
1
2
3
4
M1
Reader relay PCB
OPM_STB
NOTE:
The scanning speed of this machine is as follows.
Black/white (600dpi x 600dpi):30ipm
Color (600dpi x 600dpi):30ipm
F-2-5