- 231 -HDMIBefore requesting service or assistance, please follow these simple guides tosolve the problem.If the problem still persists, please contact your local Panasonic dealer forassistance.Sound is unusual● Set the sound setting of the connected equipment to “2ch L.PCM”.● Check the HDMI1 / 2 / 3 Input setting in the Sound Menu.Settings Sound Advanced settings● If digital sound connection has a problem, select analogue soundconnection.Watching External equipment HDMI featuresPictures from external equipment are unusual when the equipment isconnected via HDMI● Check the HDMI cable is connected properly.Watching External equipment External connection● Turn the TV and equipment off, then turn them on again.● Check an input signal from the equipment.Watching External equipment Valid input signals● Use equipment compliant with EIA/CEA-861/861D.