Minimal sound out of all of my speakers

I just received this Denon product and I am wholely unfamiliar with their products. I can barely seem to get any sound when hooking up my speakers to the receiver. The subwoofer works great by it is self powered. I'm trying to figure out if I am setting it up wrong or what. It is almost like the internal amplifier is not working. The rest of the receiver seems to be functional. Please help!