Disklavier

Yes midi out is working, i can control a synth from the MIDI out
Also Midi in is working as I can play the internal piano voice when i connect the headphones.

The pedals respond but not the piano

I also cant connect or pair my PRC100 to the disklavier, tried lots of different settings but it cant find the piano

BUT I can connect to the disklavier from dkvbrowser on my mac and play files although its only moving the pedals.

The red LED number 4 on the Power supply unit is on, the unit the mains connects to.

Any ideas?
Any help much appreciated!

PS my piano is dc7m4pro