Canon CANOSCAN FB330 series Service Manual page 45

3. Document scanning sequence
COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Standby
Document scan is
commanded?
YES
Detects border between
black and white
Calculates the amount of
horizontal scanning data and
the number of vertical scan
motor pulse
Sets scan parameter and
gate array, and initializes
buffer RAM
Moves scanning unit to the
vertical scan start position
Scanning unit
moved?
YES
LED ON
Starts document scan
6
Figure 2-9-1
CHAPTER 2
NO
NO
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