Ne3M

I have one of these cloned units from china, (the star C3 I think) sent the thing back to get repaired(Did the full diagnostics on it everything passed!) , it actaully worked for about an hour then went dead . Did the auto diagnose on it and got the following error.

Does any one have a schematic for this unit or know what chip is responsible for this D2Download? I am capable of repairing the unit if told what to do.