Epson WorkForce Pro WF-7820 All-in-One Inkjet Printer - Manual (Page 323)

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• If the IP address assigned to the product is 169.254.XX.XX and the subnet mask is 255.255.0.0, the IP
address may not be assigned correctly. Check the IP address and subnet mask assigned to the
product (
Settings > General Settings > Network Settings > Advanced ) then restart the wireless
router or reset the network settings for the product.
• Make sure your computer and product are both using the same wireless network.
• If network printing is slow, print a network status sheet and check the signal strength. If it is poor, place
your product closer to your router or access point. Avoid placing your product near a microwave oven,
cordless phone, or large metal object, such as a filing cabinet.
Note for Latin America: If you are using a 5 GHz wireless router, set the router to operate in dual
band (2.4 GHz and 5 GHz) mode. If your router uses a single network name (SSID) for both the
2.4 GHz and 5 GHz band, give each band its own network name (SSID) instead, such as Home
Network 2.4 GHz and Home Network 5 GHz. See your router documentation or contact your internet
service provider for instructions.
• Try restarting your router following the instructions in your router documentation.
Note: If you are reading these instructions online, you will lose your Internet connection when you
restart your router.
• Check to see if your wireless router or access point has an enabled Privacy Separator function that is
preventing printing from a device over the network. See your router or access point documentation for
instructions on disabling the Privacy Separator function.
• If you are connecting the product via Wi-Fi Protected Setup (WPS) and the Wi-Fi icon on your
product's LCD screen is not lit, make sure you select one of the WPS options from the product control
panel within 2 minutes of pressing the WPS button on your router.
• Check your wired LAN router or access point to see if the LED for the port to which your product is
connected is on or flashing. If the link LED is off, try the following:
• Make sure the Ethernet cable is securely connected to your product and to your router, access
point, switch, or hub.
• Try connecting your product to a different port or a different router, access point, switch, or hub.
• Try connecting with a different Ethernet cable.
• Try printing to your product from another computer on the network.
• If you are connecting the product via EpsonNet Setup and the Wi-Fi icon does not appear lit on the
LCD screen, make sure your product software was installed correctly. If necessary, reinstall your
software.