Chapter3 Handling Network Connection Check Errors Check the error number printed on the connection check report and take measures correspond to the error number. For instructions on how to print the report, see "Checking Network Connection and Settings" on page 36 . Error Code 321 Error number Solution E-1 • Check that the LAN cable is securely connected to the printer and the other network devices such as a hub. • Check that the network device such as a hub is powered on. E-2 E-3 E-7 • Make sure that the access point is turned on. • Make sure that your computer or other devices are communicating properly with the access point. • Keep the printer and access point close together.
Remove any obstacles in between. • If you entered the SSID directly, make sure that the SSID you entered is correct. You can check the SSID in the network settings column on the connection check report. • When setting up with push-button auto-configuration, make sure the access point supports AOSS/WPS. If the access point does not support AOSS/WPS, push button automatic setting cannot be used. • Make sure that the SSID does not use any character string other than ASCII characters (alphanumeric characters and symbols). The printer cannot display SSIDs that contain non-ASCII character strings. • When connecting to an access point, confirm the SSID and password beforehand.
If you are using an access point with the manufacturer's settings, the SSID and password will be written on the label of the access point. If you don't know the SSID and password, check with the person who set up the access point, or refer to the manual for the access point. • If you want to connect to the SSID generated by the tethering function of your smart device or other devices, check the manual of your smart device for the SSID and password. • If you are suddenly unable to connect to your wireless LAN (Wi-Fi), check the following. If any of the following apply to you, please use the installer to reconfigure your network settings.
The installer can be obtained from the following website. https://epson.sn • Have you newly set up your network environment with push-button auto-configuration (AOSS/ WPS) from another smart device? • Has this wireless LAN (Wi-Fi) network been configured using a method other than push-button auto-configuration? • Are you using an access point manufactured by Buffalo Corporation that can be set up using push buttons (AOSS)? E-5 Check if the access point has one of the following security methods. If not, change the access point settings to use one of the following security methods, and reconfigure the network settings of the printer.
• WEP-64 bit (40 bit) • WEP-128 bit (104 bit) • WPA PSK (TKIP/AES)* • WPA2 PSK (TKIP/AES)* • WPA (TKIP/AES) • WPA2 (TKIP/AES) • WPA3 SAE (AES)* * WPA PSK is also referred to as WPA Personal, WPA2 PSK as WPA2 Personal, and WPA3 SAE as WPA3 Personal.