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Question: How to set up PS3 with OPTICAL

I connected HDMI from Receiver to TV, HDMI from PS3 to TV, Optical from PS3 to Receiver
(PS3 Sound settings switched to Optical, with Dolby Digital 5.1, and Dolby DTS 5.1 selected)
Receiver function set to (D.IN)

Also Optical from TV to Receiver does not work.
Only get sound from HDMI to 2 speakers, not 5.1