Outputting sound from headphones or another audio system
Press the HOME button, then select [Settings].
Select [Sound] → [Headphone/Audio Out] → [Headphone], [Audio Out] or [Subwoofer].
To output sound from headphones, select [Headphone]. To output from an audio system connected to the TV, select [Audio Out]. To output from a subwoofer, select [Subwoofer].