Epson SureColor P400 Series Basics Manual page 45

The Wi-Fi light is on but you can't print
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Your router might not be assigning IP addresses automatically using DHCP. If
it isn't, you will need to set the product's IP address manually. Make sure it is
set correctly for your network. Contact your router manufacturer for
assistance.
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Make sure your firewall or security software is not set to block port 3629
(TCP/UDP). Contact your firewall manufacturer for assistance.
Printing is slow or the print is cut off
Print a Network Status Sheet by pressing the
and check the signal strength. If it's poor, try moving the product closer to your
wireless router or access point. Avoid placing the product next to a microwave
oven, 2.4 GHz cordless phone, or large metal objects such as a filing cabinet.
the network information button
Solving Problems
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