SOURCE: Etherner will not connect
The ethernet connection on the printer is for a router.
You don't connect directly to the computer with the ethernet connection.
If you want to connect directly use the usb port on the printer.
SOURCE: Hardware reset HP Officejet Pro L7580
I've been using this printer for 8 months with no problems at all. I generally didn't buy HP because of their lwsy Apple support in the past, but it seems they have really stepped it up on their website with full on software support for Apple. I...
SOURCE: no connection ref hp officejet pro 8500 a909a
How are you connecting to the printer (over the network or a direct USB connection)? If you are using a USB connection, try a new cable or plugging into a different USB port. If you use a USB hub, try a direct connection.
If you are using a network connection, check if your firewall is blocking the connection. Also check that the router (or switch) didn't dropped the network connection and didn't re-synch with the printer (or worse changed the IP address of the printer).
I hope this helps.
Cindy Wells
Testimonial: "superb"
SOURCE: my hp officejet pro L7580
To walk you through I'd need to know the OS you are running, but the generic answer is that you need to go into the print driver, and in the Printer Properties, under the ports tab , select the USB002 port rather than the DOT4 port and Apply the changes.
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