Audio from digital devices cannot be played back (HDMI ARC/Coaxial/Optical)
“Unlocked” is displayed.
When digital audio signals cannot be detected properly, “Unlocked” is displayed. link
“Unsupported” is displayed.
“Unsupported” is displayed when audio signals that are not supported by this unit are input. Check the audio output signal format from your digital device. link
Only the PCM 2-channel setting can be used to play sound from a TV via the HDMI ARC function. Set “PCM 2ch” as the audio format in the TV settings.