Login to the AP-7522 via console port (baud rate 115200) using the following credentials:
Type "y" when asked if you want to proceed with the task. Once the AP-7522 loads the default configuration, you may login to it by using the default credentials.
The above will not work if connecting using a Secure Shell (SSH) connection. In this case you can reset the AP by logging in and running the following commands:
#Delete startup-config? y