A Bluetooth connection cannot be established.

The Bluetooth device to connect with is not turned on.

• Turn on the Bluetooth device, and make sure the Bluetooth function is activated.

Registering (pairing) the Bluetooth device failed or was not completed.

• Your “WALKMAN” cannot connect with devices that are not registered (paired). Register (pair) the Bluetooth device(s). [Details]

Your “WALKMAN” or the Bluetooth device to connect with was is in sleep mode.

• Exit from sleep mode.

The remaining battery power is low or depleted.

• Charge the battery by means such as connecting your “WALKMAN” to a running computer. [Details]

The registration (pairing) information on your “WALKMAN” or the Bluetooth device to connect with has been deleted as a result of initializing settings, formatting memory, etc.

• Register (pair) your “WALKMAN” and the Bluetooth device to connect with again. [Details]

The Bluetooth audio device profile does not support A2DP.

• Make sure the Bluetooth audio device profile supports A2DP.