Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -rd325999b7b3ea03b7e294cb8a0b97df93812fbe9 -r821d1609f976b1fc01389f2e865aebcaa6434a78
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision d325999b7b3ea03b7e294cb8a0b97df93812fbe9)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 821d1609f976b1fc01389f2e865aebcaa6434a78)
@@ -160,7 +160,7 @@
  *************************************************************************/
 BOOL isHDCommunicating( void )
 {
-    return getU32OverrideValue(&hdCommunicationStatus);
+    return getU32OverrideValue( &hdCommunicationStatus );
 }
 
 /*********************************************************************//**
@@ -668,6 +668,7 @@
     if ( TRUE == didTimeout( timeOfLastHDCheckIn, HD_COMM_TIMEOUT_IN_MS ) )
     {
         hdCommunicationStatus.data = FALSE;
+        setHDOperationMode( 0, 0 );   // If HD off or not connected, consider HD mode is fault.
     }
 }