Solutions
Turn off the devices you want to connect to the network. Wait for about 10 seconds, and then turn on the devices in the following order; wireless router, computer or smart device, and then scanner. Move the scanner and computer or smart device closer to the wireless router to help with radio wave communication, and then try to make network settings again.
Solutions
After moving the computer or the smart device and the scanner closer to the wireless router, turn off the wireless router, and then turn it back on.
Solutions
Make the connection settings again so that they match the new wireless router.
Solutions
When you are using multiple wireless routers at the same time or the wireless router has multiple SSIDs and devices are connected to different SSIDs, you cannot connect to the wireless router.
Connect the computer or smart device to the same SSID as the scanner.
Solutions
Most wireless routers have a privacy separator feature that blocks communication between connected devices. If you cannot communicate between the scanner and the computer or smart device even if they are connected to the same network, disable the privacy separator on the wireless router. See the manual provided with the wireless router for details.
Solutions
If the IP address assigned to the scanner is 169.254.XXX.XXX, and the subnet mask is 255.255.0.0, the IP address may not be assigned correctly.
Select Settings - Network Settings - Advanced - TCP/IP on the scanner’s control panel, and then check the IP address and the subnet mask assigned to the scanner.
Restart the wireless router or reset the network settings for the scanner.
Solutions
Try accessing any website from your smart device to make sure that your smart device's network settings are correct. If you cannot access any website, there is a problem on the smart device.
Check the network connection of the computer. See the documentation provided with the smart device for details.