Canon MX520 series Online Manual page 163

8. Enter the passphrase, confirm the type of dynamic encryption and click Next>.
Enter the passphrase set to the access point. The passphrase should be a string of 8 to 63
alphanumeric characters or a 64-digit hexadecimal value.
If you do not know the access point passphrase, refer to the instruction manual provided with the
access point or contact its manufacturer.
9. Click Finish.
Important
If the printer cannot communicate with the computer after the encryption type of the printer
was switched, make sure that encryption types for the computer and the access point
matches that set to the printer.