You can check both the wired LAN and wireless LAN by the icon display on the upper left of the screen.
Wired LAN connection
Indicates that the LAN cable is properly connected. If it is not displayed even though it is plugged into the main unit, check if the LAN cable or router is damaged.
Wireless LAN connection
If there is a wireless LAN setting, the connection status with the specified access point is displayed in 5 levels. If it is not displayed even after setting, please check the settings of SSID and access point (it will not be displayed if there is no setting).