Tape keeps ejecting - panasonic nvfj620

The problems does sound like one of the tape loading arms that is to blame as the fuzzy picture that usually occurs in the first place is due to the tape not being loaded at the correct angle round the head drum and finally after a few more loads and when when one or more teeth actually become parted from the cog that does the loading, the machine does a mis-load stopping the reels for long enough to make both hall effect sensors stop pulsing and subsequently tells the micro that there is no tape present so it ejects the cassette. The loading arms are available as two parts left and right,it is usually only one that fails however ,I think the left one if I can remember and are available from SEME LTD or Panasonic. Sorry dont have the part numbers .

Is it only the Head cleaning cassette which keeps getting ejected, or is it happening with every tape you insert? Was the Head Cleaning Tape a little tight in the Cassette compartment? Did you have to put some pressure to push it in or did it come out with difficulty? From your symptoms, it looks like there is a gear timing problem with the cassette loading compartment gears. It could also be due to some obstruction inside. try shaking the VCR, and if you are hearing some noise, Open cover and check for foreign objects.