Marantz DD82 time

It often happens to me that when recording, it misses the time track in certain places. The recording is good. What could it be? Marantz DD82

Hi,
If you are recording from cd, the tracks should come automatically. If you are recording from analog, it is a bit more tricky as the 2 second gap needed for a track to be added, is not always accurate. Check the manual.