Marantz DV8400 SACD Output

I'm trying to run my Marantz DV8400 into my Cambridge Audio Azur 851 player. I'm using the coaxial output from the Marantz into the Cambridge. I can only get audio if I set the Marantz SACD output to "CD layer". As far as I know the Cambridge will accept the higher output from the Marantz - but the display on the Cambridge only sees  44k. As soon as I change the setting on the Marantz to SACD the Cambridge can't find the signal. Any suggestions?

Thanks in advance