What should I do if error code E-8 appears on the network connection report?

Error E-8 means an incorrect IP address has been assigned to the printer. If your product's Obtain IP Address setting is set to Auto, enable DHCP on your router or access point; if it is set to Manual, set a valid IP address using the product control panel or Web Config utility. You can also try turning off both the product and the router, waiting about 10 seconds, and turning them back on again. (Page 40)