I need some help with a digital optical audio cable.?

Question

I have a ps3 that I want to hook up to my little bookshelf surround sound system. They both have the optical audio set up. Right now I have my tv hooked up to the stereo through audio cables so I can have surround sound on my tv. I went into the audio settings on my ps3 and changed it to optical, but I didnt hear no sound. When I changed it back to the tv audio cable setting I could hear sounds. My stereo is pretty old its back from 1999. So does this mean the digital audio port on my stereo doesnt work? Or am I suppose to do something to the stereo that lets it know there is a digital optical audio cable hooked up to it like when I want hear my tv I just turn it to the "video" selector. Am I not suppose to have the stereo hooked up to my tv when I have the optical audio plugged in?

Incase u want to do some research for me, my stereo is a Aiwa, model # CX-NA767

Also if u found a manual that would be great, because I dont have one and I wanna know how to stop the stereo from shutting off by itself when its on video. So when im watching tv the stereo shuts off after a bit if it doesnt get touched.

THANK YOU SOOO MUCH!!!

Answer 1

Yes you have to tell your receiver that you want it to use a digital input for sound. There is a mapping function to connect the digital input to the function you want it hooked up to. I would suggest you Google your model number and see if you can find a manual for it. It can be pretty confusing to figure out how the more advanced functions work without one.

Answer 2

Is this your Unit?

http://www.us.aiwa.com/files/manuals/oma...

According to this manual, digital audio is for OUTPUT only, so you really can't connect the PS3.