Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I presume the printer was configured to print through a wireless connection.
If so, the change of modem involves a change of parameters that causes the former install of the driver to become invalid in some ways, disconnecting it or making it incapable in the new situation.
The simplest and easiest way to cure this is, to uninstall the printer from the printer's list (select it there and use the - button to remove it) then restart the computer, then install the printer anew. The parameters will now be valid for the current network situation, and the printer will work again.
If you need information as to the details of the uninstall-restart-reinstall I have just outlined, just Reply letting me know.
(If this answers your question, please rate my answer. Thanks.)
(If you are done with this case, or if the process I outlined cures the problem, please rate my answer. Thanks, ***** ***** luck.)
OK, you need to download the printer's driver again.
Go to the apple menu first (multicolored icon), then to About This MAC, and let me know what the 10.X version number listed there is.
Thanks for the info.
go to the Drivers And Downloads section,
and make sure that the
OS X El Capitan 10.11
is selected for Operating System.
Then SELECT, and then download, the
MG5200 Series CUPS Printer Driver
which is third in the list of drivers that will appear.
Install that... and your printer ought to work.
Did you download the CUPS driver?
Or did you also run it? that is necessary.
If the System Preferences won't Add A Printer, try it from the Printers list. (Unless that's where you tried it before, of course.)
Printers And Faxes, usually, within System Preferences, I think. (I'm not quite sure about version 10.11, but that's the usual place.)
Try that. "Add a Printer". See what it says. Let me know.
Does it present nothing but an empty space?
If so, this puzzles me. Something in the printer system has failed. You can try a restart of the computer, but it may be that you need the advice of a more Apple-expert Expert than I am. I may Opt Out of this case.
Yes, a screen shot might help the case.
You're welcome - I have Opted Out to open the case to other Experts.