Canon iR7086, Service Manual

Page: 196 / 735

Chapter 5
5-10
-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
0010-7888
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
F-5-18
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-5-19
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.
5.3.2 Enlargement/Reduction
5.3.2.1 Changing the Reproduction Ratio in Main Scanning Direction
0010-7889
iR7105 / iR7095 / iR7086
To change the magnification in main scanning direction (for both platen and ADF modes), the machine reads the image at 100% and applies appropriate image
processing in the main controller block.
Reader controller PCB Interface PCB
+24V/15V
J306
A
A*
B
B*
CPU
1
2
3
4
6
5
J308
J307
J202
J203
M501
[1]
[1] Scanner motor control signal
Motor
driver
Scanner
motor
Start
position
Acceleration
Image leading edge
Constant speed
Image trailing edge
Deceleration
Stop
Shift
speed
Shift distance
[1] [2] [3] [4]
[1] Acceleration interval: accelerates up to scan speed
[2] Run-up interval: run-up margin used to ensure stable speed
[3] Image read interval: segment over which images are read
[4] Deceleration interval: at the image trailing edge, decelerates and stops as soon as possible
HP