Marantz cd510 As Transport?

Hi all, My Cal Audio Delta transport is either dying or needs servicing, don't know exactly yet. The sound of my system was noticibly degraded and scratchy the other morning so now I'm running my Marantz cd player - recorder cdp-510 to replace it. I was wondering if hooking this up to my Cal Alpha DAC would be a good alternative to buying something new or going through a costly repair? The Marantz has a bit softer sound than the Cal's, I need to turn the volume up a bit more on the pre amp when using the Marantz. Stupid question, how would I hook up the two so the Marantz is just the transport? I figure this will also cement my feelings that it's the transport and not the dac that's on the fritz. Thanks in advance. Zar