CHAPTER 2
2 - 8
COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Figure 2-6-3
<Home position detection>
Time required
about 5 to 6 seconds
(Max. 15 sec. returning time
is added depending on the
position of scanning unit)
NOTE: If the peak light intensity
does not reach the black
level even after checking
several lines more, the
home position detection is
in error.
3
2
Detects black area
YES
NO
Standby
Sets detection mode for border
between black and white
Sets border detection value
G LED ON
YES
NO
Peak light intensity to CIS
reached black level?
Sets scanning unit return
Returns scanning unit
Overvoltage was detected?
Sets error flag