Sony SRS-X99 Operating Instructions - Page 23

 If a LAN cable is connected to the unit, disconnect it and restart the unit. When a LAN cable is connected to the unit, the unit automatically tries to connect to the home network over a wired network and a wireless network cannot be used.  Check that your wireless router is turned on.  Bring the unit and wireless router closer together. Devices that use the 2.4 GHz frequency band, such as a microwave oven, BLUETOOTH or digital cordless device, etc., may interrupt Wi-Fi communication. Move the unit away from such devices or turn them off.  Set the Wi-Fi antenna.  If a Wi-Fi network is not possible even if the setting of a Wi-Fi network is correct, try the following.  Turn off the wireless router/access point, wait a while and turn on the power again.  Turn off the unit, wait a while and turn on the power again. Distorted sound/humming or noise in the unit output  Turn down the volume of the connected device.  If a connected device has an equalizer function, turn it off.  Keep the unit away from a microwave oven, other wireless devices, etc.  Keep the unit away from metal objects.  Connect the unit and wireless router/PC via a LAN cable, not via Wi-Fi network. No sound/low sound level  Check that both the unit and connected device are turned on.  Turn up the volume of the unit and the connected device.  Check that the connected device is being played back. iTunes cannot find the unit via AirPlay  Make sure the PC with iTunes installed and the unit are connected to the same home network.  Update the software version of iTunes to the latest version. General / (on/standby) indicator is flashing red  The unit is in the protect mode. Unplug the AC power cord of the unit, and unplug all other items connected to the unit. Then, plug the AC power cord in again and turn on the unit. If the / (on/standby) indicator keeps flashing, consult your nearest Sony dealer or the shop where you purchased this unit. The last setting is not kept  If the AC power cord is disconnected while the unit is on, the last usage setting before disconnecting the AC power cord is not kept. Turn off the power of the unit, and then unplug the AC power cord. The unit has entered standby mode or BLUETOOTH/Network standby mode unexpectedly  This is not a malfunction. The unit enters standby mode or BLUETOOTH/Network standby mode automatically due to the auto standby function if no operation is performed and no sound is input for about 15 minutes. Refer to Help Guide for details about the auto standby function. To check Wi-Fi signal strength (reception sensitivity) While the unit is connected to the Wi-Fi network, tap and hold the NETWORK button until you hear a beep. Signal strength 5 ····· 4 ····· 3 ····· 2 ····· 1 ····· 0 ····· Number of flashing function indicators Flashing stops when any button is tapped. To receive a stronger signal, try the following:  Change the direction of the Wi-Fi antenna.  Turn off other wireless devices. 23US Additional information