Finally got around to playing around with it.
I have disconnected the optical connection to the receiver, and the L/R normal stereo RCA jacks, same results. All that is connected in the 5.1 analog outputs.
Looks like the Pioneer is only sending signal out the L/R SACD outputs. I connected these outputs to the C/SR/SL inputs on the reciever, and the inputs worked.
Bottom line is there is no signal coming out of the C/SR/SL/SUB on the Pioneer unit.
BTW, also tried Pink Floyd DSTOM on SACD with the same results.
Any ideas?
