If you can not remove the cassette, refer to this problem.
-Battery is exhausted.
-The cassette compartment is completely open.
- Connect the compact power adapter or attach the fully-charged battery pack to the camcorder .
- Slide 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.