I have a Canon XL1s. lately,for no apparent reason, I get a "Remove The Cassette "message when I try to play a tape. When recording, it records for 2 or 3 minutes ,then I get the same message in the viewfinder.. At first I thought the heads were dirty, so I put in a head cleaning tape and let it run all the way to the end.But nothing changed.I would like to find out what the problem is before I go to the repair shop