Scanner stops locks-up right before starting a scan.

The ScanMaker 5900 will work fine for numerous scans, but then suddenly freeze for no apparent reason just before beginning to scan another page. It appears to be a program trouble, not a mechanical malfunction. Some programming glitch freezes the scanner, leaving it with a blinking green light instead of the steady "on" green indicator. This has happened before and it's always managed to clear itself after all connectors are unplugged and a few moments pass. None of that is working this time. The jam-up is not in the computer, nor does the jam appear to originate from the computer, it strictly appears to be something within the scanner itself. Is there any way to force a program reset inside the scanner? Perhaps by using some combination of the seven control buttons on the from panel (I'm not counting the seventh "on/off" button).