Canon imagePRESS C1 P Service Manual page 284

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