Scanner not found

[Alain PORTAL]

Hi,

I haven't used my scanner since I was under FC-4 where it worked fine.
Today, under an uptodate FC-5, my scanner isn't detected.
This is an Espon Perfection 1650.

sane-find-scanner return nothing.
scanimage -L return "No scanners were identified."

Any idea of the problem?
Of course, scanner is power on and connected ;-)

Regards,
Alain