149NetworkDiagnosticsUsed to check the network connection.Setting items Setting detailsPhysical ConnectionChecks the physical LANport connection.OK : Connected.Error : The LAN cable is not connected. Check the connection.Router AccessChecks the connection fromthis unit to the router.OK : Accessed.Error : Failed to communicate with the router. Check the router settings.Internet AccessChecks whether this unithas access to the Internet(WAN).OK : Connected.Error : Failed to connect to the Internet. Check the Internet connectionenvironment or router settings.Maintenance ModeUse when receiving maintenance from a DENON service engineer or custom installer.Setting detailsNOTEOnly use this function if so instructed by a DENON serviceperson or installer.