Epson Network Report Code E-1
The network report says the physical network connection or required network equipment is not active.
Error meaning
Network cable or network devices are not connected/turned on.
This meaning is tied to the reviewed family/platform and subsystem below; do not reuse the number or wording by itself on a different printer family or protocol.
Applies to
ET-3930/ET-3940/ET-3950 Series
- ET-3930
- ET-3940
- ET-3950
Common formatting
These are formatting/lookup aliases for this reviewed condition, not separate error pages.
- E-1
- e-1
What usually causes it
- An Ethernet cable is unplugged, damaged, or connected to an inactive switch/router port.
- The router, switch, access point, or other required network device is powered off or still starting.
- The printer is being checked for Wi-Fi while the intended setup actually depends on a wired network path.
What to try
Check which network connection you intend to use
Decide whether this printer should be on Ethernet or Wi-Fi so you do not troubleshoot the wrong interface.
For Ethernet, reseat the cable at both ends
Confirm the cable clicks into the printer and a live router/switch port. Try a known-good cable or port if link lights remain absent.
Make sure the network equipment is fully powered
Wait for the router, switch, or access point to finish starting before printing another network report.
Run the network connection check again
Generate a fresh report after the physical link is restored and continue only if a different code remains.
After each corrective action
Retry the same operation that produced E-1. If it now works, stop there rather than changing unrelated printer, network, supply, or service settings.
If the code returns
If E-1 remains with a known-good cable and active network port, compare the Ethernet link state on the switch and printer or test the intended Wi-Fi setup separately.
When service may be needed
Persistent lack of link on multiple known-good cables/ports may require Epson support, but most E-1 cases are cabling or network-equipment availability rather than an internal repair.
Continue with guided troubleshooting
If the printer still is not working after the reviewed checks, carry this verified error context into the guided troubleshooter.
Related information
Verified source
Official Epson three-model family guide. The network-code section was reviewed directly; Epson notes that not every listed network code necessarily applies to every product configuration, so public pages must preserve configuration qualifiers.