Check3 If using WPA/WPA2 key or a password, make sure encryption key forcomputer, network device, and printer matches key set for wireless router.The length or format of the Wi-Fi password and authentication method must be identical among the wirelessrouter, the printer, and your computer.For details, see Setting an Encryption Key.With Encryption On, Cannot Communicate with Printer AfterChanging Encryption Type at Wireless RouterIf you change the encryption type for the printer and it subsequently cannot communicate with thecomputer, make sure the encryption type for the computer and the wireless router matches the type setfor the printer.Cannot Communicate with Printer After Enabling MAC/IP Address Filtering or Encryption Key onWireless Router452

Canon TR7660 Online Manual