The phono inputs had an additional pre-amp built into them. You'll need to get an external phono pre-amp (Google it). Then you'll connect the output of that pre-amp to any of the line inputs of the receiver (the CD one will be fine).

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris