Yamaha RX-V781 Owner's Manual page 140

Problem
Wireless network is not found.
The unit does not detect the PC.
The files in the PC cannot be viewed or played back.
The Internet radio cannot be played.
The iPod does not recognize the unit when using
AirPlay.
The application for smartphone/tablet "AV
CONTROLLER" does not detect the unit.
Firmware update via the network is failed.
Cause
Microwave ovens or other wireless devices in your neighborhood might
disturb the wireless communication.
Access to the network is restricted by the firewall settings of the wireless
router (access point).
The media sharing setting is not correct.
Some security software installed on your PC is blocking the access of the
unit to your PC.
The unit and PC are not in the same network.
The MAC address filter is enabled on the unit.
The files are not supported by the unit or the media server.
The selected Internet radio station is currently not available.
The selected Internet radio station is currently broadcasting silence.
Access to the network is restricted by the firewall settings of your
network devices (such as the router).
The unit is connected to a multiple SSID router.
The unit and smartphone/tablet are not in the same network.
The MAC address filter is enabled on the unit.
It may not be possible depending on the condition of the network.
En
Turn off these devices.
Check the firewall setting of the wireless router (access point).
Configure the sharing setting and select the unit as a device to which music contents are
shared (p.79).
Check the settings of security software installed on your PC.
Check the network connections and your router settings, and then connect the unit and
the PC to the same network.
In "MAC Address Filter" in the "Setup" menu, disable the MAC address filter or specify
the MAC address of your PC to allow it to access to the unit (p.120).
Use the file format supported by both the unit and the media server. For information
about the file formats supported by the unit, see "Playing back music stored on media
servers (PCs/NAS)" (p.79).
There may be a network problem at the radio station, or the service may have been
stopped. Try the station later or select another station.
Some Internet radio stations broadcast silence at certain of times of the day. Try the
station later or select another station.
Check the firewall settings of your network devices. The Internet radio can be played
only when it passes through the port designated by each radio station. The port number
varies depending on the radio station.
Access to the unit might be restricted by the network separation function on the router.
Connect the iPod to the SSID which can access the unit.
Check the network connections and your router settings, and then connect the unit and
smartphone/tablet to the same network.
In "MAC Address Filter" in the "Setup" menu, disable the MAC address filter or specify
the MAC address of your smartphone/tablet to allow it to access to the unit (p.120).
Update the firmware via the network again or use a USB memory device (p.131).
140
Remedy