If you can not remove the cassette, refer to this problem.
-Battery is exhausted.
-The cassette compartment is completely open.
1.Plug the compact power adapter into a power outlet.
2.Connect the compact power adapter to the camcorder's DC IN terminal.
3.Slide < OPEN/EJECT > fully in the direction of the arrow and open the cassette compartment cover.
The cassette compartment opens automatically.
If these problems persist even after attempting the solutions described above, please contact the nearest Canon service center.