Apple Canon CanoScan N670U Flatbed Scanner "scangear cs release lock switch" Questions

...ScanGear CS saying: Release the lock switch, detach the I/F cable and reconnect. i already did it. the lock is released. uninstalled and reinstalled the ScanGear. nothing works. any idea??? this lock ...

...Scangear cs does not communicate with the scanner saying that it is locked, while the scanner is unlocked; I disconnected and reconnected it several times (and the reading head does not move a little ...