Before installing the network scan driver, make sure:
You are logged on with root user authority.
You have 62MB of free disk space available for a complete installation.
You have SANE and/or SANE back ends installed on your server.
The host computer is properly configured to communicate with a supported network printer over TCP/IP.
Your printer has an internal network card and can communicate via an IPv4 network. External network adapters are not supported.