This could be caused by a few different problems with the printer but here are some troubleshooting techniques that may help:
1. Check that the printer is able to print correctly on its own. Print out a configuration page from the printer or install the printer onto a new machine as a local printer and print out a test page. If this prints out as symbols, the problem is a most likely hardware error and the printer will need to be serviced. Try step 2 before servicing. If the printer prints normal characters, go to step 3.
2. Carefully go through the settings on the printer and review the
printer's configuration page to make sure everything has the correct
settings and nothing was changed accidentally.
3. The most common problem is that the drivers on the print server, or on the server computer, have become corrupted. In Printers and Faxes on the print server, delete all the drivers for the printer, reinstall them, and then add the printer again. Make sure to print a test page at the end of the add printer wizard.
4. It could be a problem with the ethernet cable so try swapping the current ethernet cable with a new one.
5. If it is still printing symbols at this point, it is most likely a hardware issue and the printer will need to be serviced.
you should connect using ethernet. (probably no other way at this point, unless you found some crazy adapter, i guess)
click the apple logo in the upper left corner.
select system preferences:
select network:
select ethernet:
you have two choices, you can either write down the computers IP address and use that in the printer. or you can manually set your own here by choosing "Use DHCP with manual address"
if you already have a bunch of stuff networked, you probably shouldn't change your IP. but if the current IP isnt one you can set your printer to, then you'll have to change it here.
lets say your computer IP is set to 192.000.001.001
in printer your printer menu:
go to interfaces:
go to tcp/ip (make sure it's enabled): ip class C, subnet mask FFFO, go to IP address
set to 192.000.001.002 (it needs to be almost the same as the computer, but with the last number different)
in preferences: printers: add printer:
Protocol: LPD
Address: 192.000.001.002:515
[THE 515 AT THE END IS THE PORT NUMBER, ITS SUPER IMPORTANT]
Queue: EliteXL [ALSO IMPORTANT]
Name: gcc (doesn't matter)
Print using GCC Elite XL 20/600 v3.31 (or whatever driver you have)
hints if those numbers didnt work for you:
I got the queue number and port number by printing the config page directly from the printer (not the help page)
On the config page, look for "interfaces"
under that, look for "TCP/IP"
under that, look for "Lpd"
there you will find the queue name and port number. this info was missing from a lot of the other online solutions i found and it didnt work until i got it right. (use the port number listed above the queue name, not the one listed below after TCP)
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