No sound from Marantz SR6006 zone 2 or 3

I just placed a Marantz SR6006 into use. The old receiver died. I use zone 2 to send analog signals to an old Denon DRA-375 to power outdoor speakers. I use zone 3 to send analog sources to my laptop to convert them to digital files. I can plug either zone's cables into the laptop and record phono input. The old receiver had zone 2 plugged into the Denon on the CD input RCA jacks. When I plug either zone 2 or 3 into the Denon I get nothing. I unplugged my CD player from the Marantz and plugged it directly into the Denon CD input jacks and it play just fine. If I am getting a signal out of Zone 2 and 3 into my laptop and the Denon will play input through the CD input why can't I play zone 2 or 3 through my Denon?
Help. I am very frustrated at this point.
Thanks.

The input I am using to try and set up zone 2 and 3 is from my turntable. I assume that has to be analog. I mentioned the CD playing through the Denon because I thought I had blown out the CD input jacks on the Denon when I raised the out put volume from either zone 2 or 3 cables on the Marantz in an attempt to get some sound from the outdoor speakers hooked up to the Denon. I realize that if I can ever get sound to my outdoor speakers attached to the Denon that I may have to hook up the CD player by analog RCA jacks so that all sources to zone 2 and 3 are analog.

Thanks I will try the tuner first.

I don't know what just happened. I took the advice to start with the tuner and lo and behold it worked. Both through the Denon to the outside speakers and into the laptop. Then onto the CD player, it worked. Then the turntable, that has never worked, and it worked. Then the tape deck, same thing. I didn't doing anything different than what I have tried the last three weeks but right now I don't care. :)Thanks to the folks who responded. I just hope this lasts!!!