Canon ImageRunner iR8500 Series, Service Manual, Page: 259 / 1122

Chapter 5
5-7
5.2 Basic Sequence
5.2.1 Basic Sequence of Operations
0006-9414
iR105i/iR105+ / iR9070
F-5-8
F-5-9
5.2.2 Book Mode, 1 Original, Copyboard Closed
0008-7399
/ iR8070
Main power
switch ON Copy Start
key ON
Original set
Shading correction
INTR WMUP SLEEP WMUPR LSTR STBY SCFW SCRV STBY
GAIN
1.5 sec
Scanner motor (M5)
HP search
Initial activation
Controlled to 70˚C
70˚C
· Lamp performance measurement
· Heating
OFSE
[1] In book mode, turns on as soon as the original size is found.
[2] In ADF mode, turns on as soon as an original is placed in the ADF.
Fluorescent lamp
heater (H5)
Scanning lamp pre-
heat voltage
Scanning lamp (FL1)
Scanner HP sensor
(PS1)
Controlle
d
Image leading edge
signal (ITOP)
1st page
image leading
Control
panel
power
If not at HP, HP search.
Reading the standard white plate.
Synchronizing in sub scanning direction.
If for scanning two or more pages, kept on
also in reverse to stabilize light intensity.
1) HP search at power-on
2) Shading correction position
3) Pre-scanning
(speed used at 50% reduction)
4) Original scanning
(book mode)
4) Original scanning
(ADF mode; stream reading)
4) Original scanning
(ADF mode; stream reading)
Image leading edge
Original
HP
Scanner HP sensor Image leading edge sensor
52.5 mm
185 mm
385 mm
Small-size position
(less than 216 mm long)
Large-size position
(216 mm or longer)