Controlling The Scanning Lamp; Overview - Canon iR6570 series Service Manual

Chapter 5
101-200%
201-400%
The following shows the speeds at which the mirror base is moved:
[2] In ADF mode, the machine changes the speed at which the original is moved for a ratio between 25% and 200%.
25-49%
50-99%
100%
101-200%
The following shows the speeds at which the original is moved:

5.3.3 Controlling the Scanning Lamp

5.3.3.1 Overview

The following shows the items of control and the components of the control system associated with the activation of the scanning lamp:
1) Controlling the Activation
The machine turns on or off the scanning lamp using the drive signal (XE-ON) generated by the CPU on the reader controller PCB. In response to the
signal, the inverter PCB generates high-frequency high voltage in the activation motor circuit using the drive voltage (+24 V) supplied by the reader
controller PCB, thus turning on the scanning lamp.
2) Detecting an Error
The machine identifies an error in the intensity of light as an activation error occurring when the lamp is initially turned on (shading correction).
ERROR CODE:
5-8
decreases the mirror base speed.
e.g., at 200%, collects images at 1/2 the speed for 100%.
decreases the mirror base speed.
e.g., at 200%, collects images at 1/2 the speed for 100%.
speed ratio
1
1/2
1/4
25% 50% 100% 200%
increases the speed used to move the original (as compared to 100%).
collets image data at the same speed as for a ratio between 100% and
196%.
uses data skipping on the main controller PCB (50%).
increases the speed at which the original is moved.
e.g., at 50%, collects the image at twice the speed for 100%.
325 mm/sec
decreases the speed at which the original is moved.
e.g., at 200%, collects image data at 1/2 the speed for 100%.
2
1
1/2
1/4
25% 100%
50%
Description
Magnification
400%
F-5-12
T-5-6
Description
200%
F-5-13
0008-7506