did you do a "test tone" from the receiver?
did you tell the STB to out put in pcm, or digital?
did you assign the optical input to the correct input location on the 601?
what does the receiver display say it is receiving?
did you tell the STB to out put in pcm, or digital?
did you assign the optical input to the correct input location on the 601?
what does the receiver display say it is receiving?