Epson L5290 Series User Manual page 168

Solving Problems
A privacy separator on the wireless router is available.
Solutions
Most wireless routers have a separator function that blocks communication between devices within the
same SSID. If you cannot communicate between the printer and the computer or smart device even if
they are connected to the same network, disable the separator function on the wireless router. See the
manual provided with the wireless router for details.
The IP address is incorrectly assigned.
Solutions
If the IP address assigned to the printer is 169.254.XXX.XXX, and the subnet mask is 255.255.0.0, the IP
address may not be assigned correctly.
Print the network connection report, and then check the IP address and the subnet mask assigned to the
printer. To print a network connection report, select Settings > Network Settings > Connection Check.
Restart the wireless router or reset the network settings for the printer.
There is a problem with the network settings on the computer.
Solutions
Try accessing any website from your computer to make sure that your computer's network settings are
correct. If you cannot access any website, there is a problem on the computer.
Check the network connection of the computer. See the documentation provided with the computer for
details.
The device connected to the USB 3.0 port causes radio frequency interference.
Solutions
When you connect a device to the USB 3.0 port on a Mac, radio frequency interference may occur. Try
the following if you cannot connect to wireless LAN (Wi-Fi) or if operations become unstable.
❏ Place the device that is connected to the USB 3.0 port further away from the computer.
The printer has been connected by Ethernet using devices that support IEEE802.3az (Energy
Efficient Ethernet).
Solutions
When you connect the printer by Ethernet using devices that support IEEE802.3az (Energy Efficient
Ethernet), the following problems may occur depending on the hub or router that you are using.
❏ Connection becomes unstable, the printer is connected and disconnected again and again.
❏ Cannot connect to the printer.
❏ The communication speed becomes slow.
Follow the steps below to disable IEEE802.3az for the printer and then connect.
1. Remove the Ethernet cable connected to the computer and the printer.
2. When IEEE802.3az for the computer is enabled, disable it.
See the documentation provided with the computer for details.
3. Connect the computer and the printer with an Ethernet cable directly.
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The Printer Does Not Work as Expected
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