How do I reset the HP ScanJet Pro 2500 F1 scanner?

To reset the scanner, close the HP Scan Software and HP Scanner Tools Utility, then press the Power button to turn off the scanner and disconnect the power supply. Wait 30 seconds, then reconnect the power supply and press the Power button to turn the scanner back on. A reset is needed when error messages such as 'Scanner initialization failed' or 'Scanner not found' appear and a simple power cycle did not resolve the issue. (Page 42)