I just replace the original CD30 with CDC 40 DAB. It is working well, but when I tried to select DAB option I received "DAB box error" messege. So, maybe I need a addition unit which is DAB receiver and it should be connected to DAB pins from HeadUnit (DAB_L, DAB_R and DAB_GND, see the picture).
Due to the fact that I can not use Ph+ and Ph- for AUX In stereo, I'm thinking to use the DAB pins for AUX IN stereo. What do you thing about that?
Is it possible or I can demange the DAB interface if I connect an auxiliar input source.
If not, what si the DAB interface and why the DAB receiver is not buit-in the HeadUnit?