Controlling The Scanner Motor <Ir7086 - Canon imageRUNNER 7095 Service Manual

Start position
ERROR CODE:
E202 (HP detection error)
-0001: when the No. 1 mirror base is moving forward, it fails to reach the HP sensor within a specific
period of time
-0002: when the No. 1 mirror base is moving in reverse, it fails to reach the HP sensor within a specific
period of time
SERVICE MODE:
COPIER>ADJUST>ADJ-XY>ADJ-X (scanner image leading edge position adjustment)
Enter a value to adjust the image leading edge position.
settings range: 0 to 2970 (a change of '12' causes a shift of 1 mm)
COPIER>AJST>ADJ-XY>ADJ-S (scanner home position)
Do not change the setting.
5.3.1.3 Controlling the Scanner Motor <iR7086>
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
Reader controller PCB
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.
Image leading edge
HP
Acceleration
[1] [2]
Shift distance
[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.
F-5-17
J202
J308
J203 J307
[1]
CPU
[1] Scanner motor control signal
F-5-18
Image end
Constant speed Deceleration
[3]
Interface PCB
+24V/15V
J306
A
3
1
A*
Motor
4
B
5
driver
2
B*
6
Chapter 5
Stop
[4]
Scanner
motor
M501
0010-7888
5-9