Basic Sequence; 1Basic Sequence Of Operation At Power-On - Canon iR4570 Series Service Manual

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3.2 Basic Sequence

3.2.1 Basic Sequence of Operation at Power-On
iR2270 / iR2870 / iR3570 / iR4570
1. Reader Unit
Main power
switch ON
Reader motor
(M501)
LED
CIS HP sensor
(PS503)
Shading
position
F-3-3
2. Printer Unit
If any of the cassettes (1 through 4) is in low position, the lifter is moved up until the top of the stack of sheets is
detected.
Shading
correction
CIS output
offset correction
Shading
CIS output
position
offset correction
- LED intensity adjustment
(when lit in each color)
- CIS output gain adjustment
(when lit in all colors)
SREADY
Shading
position
: forward
: reverse
STBY
Chapter 3
0008-1235
3-5

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Ir3570 seriesIr2870 seriesIr2270 series

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