Canon iR7086, Service Manual

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Chapter 5
5-9
The following shows the components associated with the scanner drive system:
F-5-15
[1] Scanner Motor M501 Drive Signal
starts/stops the motor; controls the direction and speed of its rotation
[2] Scanner HP Detection Signal
detects the presence of the No. 1 mirror base at home position
5.3.1.2 Controlling the Scanner Motor
0010-7887
iR7105 / iR7095
The configuration of the system used to control the scanner motor is as follows; the motor driver on the interface PCB operates according to the signals from the
CPU to start/stop the scanner motor and to control the direction and speed of its rotation
F-5-16
a. Reverse Movement After a Scan
After an image scan, the No. 1 mirror base is moved in reverse as far as the shading position at 325 mm/sec regardless of the selected magnification.
b. Forward Movement During a Scan
During an image scan, the No. 1 mirror base is controlled at the speed indicated in the following figure; the No. 1 mirror base is moved forward at 325 mm/sec for
100% magnification.
F-5-17
ERROR CODE:
E202 (HP detection error)
[1]
[2]
(forward)
(reverse)
Scanner motor
Light-blocking plate
No.2 mirror base
No.1 mirror base
Reader
controller
PCB
Interface
PCB
Scanning lamp
Scanner
HP sensor
Reader controller PCB
Motor driver
Interface PCB
+24V/15V
J306
A
A*
B
B*
CPU
1
2
3
4
6
5
J303
J302
J202
J205
Scanner motor
M501
[1]
[1] Scanner motor control signal
Start position
Acceleration
Image leading edge
Constant speed
Image end
Deceleration
Stop
Shift speed
Shift distance
[1] [2] [3] [4]
[1] acceleration interval: accelerates to scanning speed.
[2] run-up interval: servers as a margin to ensure stable speed
[3] image read interval: reads the image at a specific speed
[4] deceleration interval: decelerates at the end of the image and stops.
HP