CHAPTER 2
2 - 9
COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Figure 2-6-4
2
3
Peak light intensity to CIS
reached black level?
YES
Stops scanning unit
YES
Fixed feeding
limit was exceeded?
NOTE: Fixed feeding is limited to A4.
Scanning unit stops at the point
the limit is exceeded even when
black area is not detected.
NO
Peak light intensity to CIS
reached black level?
Returns scanning unit
NO
Detects border between
black and white
Sets HP return
distance (2 mm)
Returns scanning unit
Stops scanning unit
Scanning unit
returned 2 mm?
Initializes buffer RAM control
Standby
YES
NO
YES
NO
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.