Yamaha YAS-209BL Owner's Manual page 53

Wireless network is not found
l Microwave ovens or other wireless devices might disturb the
wireless communication.
Turn off these devices or move them farther away from the unit and
wireless router.
l Access to the network is restricted by the firewall settings of the
wireless router (access point).
Check the firewall setting of the wireless router (access point).
The streaming service cannot be played
l The selected streaming service is currently not available.
Play the streaming service later.
l Access to the network is restricted by the firewall settings of
your network devices (such as the router).
Check the firewall settings of your network devices. The streaming
service can be played only when it passes through the port
designated by each streaming service. The port number varies
depending on the streaming service.
The Sound Bar Controller app does not
detect the unit
l The unit and mobile device are not in the same network.
Check the network connections and router's settings, and then
connect the unit and mobile device to the same network.
l The mobile device is not connected to the network using the 2.4-
GHz band.
Connect the mobile device to the network using the 2.4-GHz band.
l The mobile device is not connected to the wireless router over a
wireless connection.
Connect the mobile device to the wireless router over a wireless
connection.
l The unit is connected to a multiple SSID router.
The router's network splitter may be blocking access to the unit.
Connect the unit and mobile device to a network with the same
SSID. Try connecting to the primary SSID first.
l The wireless (Wi-Fi) function is disabled.
Enable the wireless (Wi-Fi) function. For details, see the following:
– "Enabling/disabling the wireless (Wi-Fi) function" (p.41)
Firmware update via the network is
failed
l It may not be possible depending on the condition of the
network.
Update the firmware via the network again or use a USB memory
device.
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