Canon CANOSCAN FB330 series Service Manual page 47

E. Basic Sequences of CanoScan FB630U/FB636U
The basic sequences of CanoScan FB630U/FB636U are divided into power ON sequence,
calibration sequence, and document scanning sequence.
1. Power ON sequence
Tests gate array
Gate array read/write
was tested normally?
Scanning unit is in home
COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Power ON
read/write
NO
Sets error flag
YES
NO
position?
Returns scanning unit
YES
Scanning unit returned
to the home position?
Stops scanning unit
1
Figure 2-10-1
NO
YES
Returned more
than 300 mm?
YES
Sets error flag
CHAPTER 2
NO
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