Hello, I have an older surround sound system (Panasonic SC-XH150) that I am trying to setup with a newer Toshiba 49L310U TV. I have both an HDMI cable and a digital optical audio cable connected to the TV; the HDMI cable is plugged into the ARC HDMI port. Here is a link to the manual, I've tried what it said on page 10, please help!
manual
manual