Solution
Remove the cassette mark
If the slash cassette mark is blinking・・・No cassette.
Load a cassette correctly.
If the slash cassette mark is blinking and the remaining time on the tape is displayed(*)・・・The cassette is protected.
Check whether the position of the protect switch is set to REC.
*On the viewfinder screen, " THE TAPE IS SET FOR ERASURE PREVENTION " lights up for 4 seconds and then blinks red.
If these problems persist even after having attempted the solutions described above, please contact the nearest Canon service center.