Epson ET-3850 User Manual page 45

Error code and message
E-1
Confirm that the network cable is
connected and network devices such as
hub, router, or access point are turned on.
Solution
Make sure your router, access point, and/or hub are
turned on, and the network cable is securely connected to
your device and to your product.
If you are trying to set up Wi-Fi, remove the network cable
and set up Wi-Fi again. Ethernet and Wi-Fi cannot be
connected at the same time.
45