Canon imagePRESS C1 Service Manual - page 284
Chapter 5
5-5
F-5-8
F-5-9
2. Basic Sequence of Operation in Response to a Press on the Start Key (ADF mode; 1 original)
F-5-10
Reader motor
Original scanning
lamp
HP sensor
Start key
ON
STBY
STBY
SREADY
SCFW
SCRW
Reverse
Forward
Reverse
Forward
Reverse
ON
ON
ON
Scanner unit position
HP (shading position)
HP (shading position)
Copyboard
cover start
position
Image end
Shift to copyboard
scan start position
CCD-LIVE
control*1
CCD-KILL control*1
Forward Reverse
shift shading
fixed shading
white plate dust detection control
shading correction
*1: controls by turning on/off the power of the CCD and the circuitry around it for power saving and for
protection against overheating.
1. HP positioning
2. move to shift shading
start position
6.Original scann
7.HPposition move to shift
Start
position
Shading
position
Image leading edge
Stop position
Original size detection
position
*1: shifts only if the copyboard cover (ADF) is open.
*2: executed only if 1 min or more (power off) has passed from the previous session.
3.move to shift shading
4.fixed shading
- white plate dust detection
shading correction
5.Start position
move to shift
*1
*1
*2
*2
Reader motor
Original scanning
lamp
HP sensor
Start key
ON
STBY
STBY
SREADY
SCRW
SCFW
Reverse
Forward
Not executed if 1 min or less (power off) from previous session.
Reverse
Reverse
ON
ON
Scanner unit position
HP (shading )
HP (shading )
Image
end
Stream reading
shift position
CCD-KILL control*1
Forward Reverse
shift shading
fixed shading
white plate dust detection control
shading correction
Forward
Forward
Forward
Stream
reading
position
ADF Dust
shading
shift position
shift shading
fixed shading
white plate dust detection
control shading correction
*1: controls by turning on/off the power of the CCD and the circuitry around it for power saving and for
protection against overheating.
CCD-KILL control*1