Canon ImageRunner iR8500 Series Service Manual page 261

1. The copyboard cover is opened.
The scanner moves to the point of original
detection.
2. The Start key is pressed.
After the original size has been detected,
the scanner moves to home position.
3. After shading correction in home position,
the scanner moves to start position.
4. The scanner scans the original.
5. The scanner returns to start position
(at the speed used for 50% reduction).
6. The scanner moves to the point of original
size detection.
Image
Stream reading
leading
position
edge
(start position)
HP
F-5-13
Point of original Image Stop
size detection end position
: No. 1 mirror base
Chapter 5
5-9