Hello, at work we have a DM64 with an M DL ADAPT AX with DANTE card. Some time ago we sent the product for service because we had some problems. When the unit was returned to us, the adapter did not work. So I checked the adapter components and found something wrong on the back. There is no logic IC (U10) and no capacitor (C31).
I hope you can help me identify the model of missing parts
If you sent it for service and it came back not working, you should pursue that with the repair facility.
Also, an empty spot on a circuit card does not automatically mean something is missing. It is common for circuit designers to include places on a PCB for components that are only used for certain versions, or are for future functionality, or are intentionally left off because they later were determined to be unnecessary.