When receiving 4K signals via HDMI input from PlayStation 4 Pro, etc., the display information does not appear even if the display button of the sound bar is pressed.

Though the HDMI IN/OUT jacks support the 4K format, information such as volume, sound field, or audio format is not displayed for some 4K formats.
In this case, operate while watching the front panel display by using the remote control of the sound bar.
To check the audio format of the signals input to the sound bar, operate the device that outputs the source.

NOTE: For details on the operation, refer to the operating instructions of that device.