Service manual

CHAPTER 5
5 - 3 COPYRIGHT  2003 CANON INC. CANOSCAN 9900F REV.0 FEB. 2003 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. Communication Failure
Figure 5-2
Scan
Communication
failed ?
Scanning Unit
failed to move ?
Yes
Table 5-2
Yes
Table 5-3
Yes
Table 5-4
No
Poor
image quality ?
No
Acoustic noise
originated ?
Yes
No
Table 5-5
End
No