i just installed my z1 and have pretty much all feautures but for whatever cant get sound on xm sirius and the tv tuner???? I have the picture and it shows xm and sirius working when i cjange channel but i have no sound... the ipod adapter and all other feautures work with sound perfectly.. please someone help..

The IP BUS cables are directional and color coded, and the IP BUS ports on the unit and modules are also color coded. If you put in an IP bus cable backwards, it messes things up, like having control but no audio, or disabled/limited function.

Double check all your IP BUS cables, make sure they are connected correctly.