I cannot scan from my computer with Epson Scan. What should I do?

• Try these solutions:
  • Make sure your product is turned on and any interface cables are securely connected at both ends.
  • If the product is connected to a USB hub, make sure it's connected to a first tier hub (the hub closest to the host computer) when more than one hub is connected to the computer.
  • Make sure Epson Scan is selected in your scanning program.
  • Make sure your computer is not running in a power-saving mode, such as sleep or standby. If so, wake your system and restart Epson Scan.
  • Try restarting your computer.
  • If you upgraded your operating system but did not reinstall Epson Scan, try reinstalling it.
  
  Related references
  Install Software
  Scanning with Mac OS X 10.6/10.7