OPTICAL CABLE DIAGRAM on 2011 Range Rover Vogue AUDIO system
 

I have a fault on the AUDIO CONTROL MODULE AND/OR OPTICAL CABLE IN OR OUT OF THE MODULE THAT HAS CAUSED THE unit to flash and freeze on

I have a tech putting in a new aftermarket 9 inch screen but because the optical cable fault is in play we cant get sound through the system when its installed so he had to remove it

Can anyone tell me or show us the full location of the optical cables in and out of the factory unit and audio control module please so my tech can chase down the faulty cable

He has done the diagnostic scan which threw the fault code U2003-31 from the Audio Control Module which says fiber optic cable bus........permanent