Cannot Use the Printer on Replacing an Access Point or ChangingIts settingsWhen you replace an access point, perform network setup of the printer again.Perform network setup again according to the instructions on our website.If the problem is not resolved, see below.Cannot Communicate with the Printer After Applying MAC/IP Address Filtering or Entering an EncryptionKey to the Access PointWhen Encryption Is Enabled, Cannot Communicate With the Printer After the Encryption Type WasSwitched on the Access PointCannot Communicate with the Printer After Applying MAC/IP AddressFiltering or Entering an Encryption Key to the Access PointCheck1 Confirm the access point setting.Refer to the instruction manual provided with the access point or contact its manufacturer to confirm theaccess point setting. Make sure that the computer and the access point can communicate with each otherunder this setting.Check2 If you are performing MAC address filtering or IP address filtering at theaccess point, confirm that the MAC address or IP address for both the computer or thenetwork device and the printer are registered.Check3 If you are using a WEP or WPA/WPA2 key, make sure that the encryptionkey for the computer or the network device and the printer matches that set to theaccess point.Besides the WEP key itself, the key length, key format, the key ID to use, and the authentication method mustmatch among the printer, the access point, and the computer.Normally, select Auto for the authentication method. If you want to specify the method manually, select OpenSystem or Shared Key according to the setting of the access point.How to Set an Encryption Key343