Hi, thank you for contacting JustAnswer.com. My name is Russell. I regret that you were not responded to sooner, and will do what I can to provide the right answer to your question.
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The news is unfortunately not very good: A 'print unable' or 'Unable to print' message on a Brother printer usually means a fatal error. To be frank, this sort of error often leads to a decision being needed, between having the printer repair-serviced, and replacing the printer.
First try opening the printer, and making sure that no loose parts, paper bits, paper sheets, debris, anything, is obstructing or obscuring the inner workings.
Second, while the printer is open, see if there is considerable (enough to notice) dust in the lower parts of the printer. If so, the 'encoder strip' might possibly be obscured by dirt and need cleaning... if this might be the case, let me know and I will instruct you further.
Third, was there a paper jam originally? if so, then if it was removed roughly, the machine may have been damaged, unfortunately.
And, wherever the jam occurred, and wherever paper was removed from the printer, would be the location that most needs a close inspection for anything wrong - broken parts, jammed paper presence sensor swiches, etc.
Lastly, leave the printer unplugged for overnight or longer. A 'rest reset' is about the last thing to try, before deciding between repairing and replacing a printer.
How old is the printer? measured from its date of original purchase.
If the paper jam message is gone, then that is a good sign. Improvement in the printer's condition has been achieved.
The next things to do are:
1. check and clear the printer's queue, then try printing again.
and if that fails to get results
2. uninstall-restart-reinstall the printer's drivers.
For me to instruct you exactly how to best go about that, with the greatest likelihood of the best results, requires that I ask:
What is your computer, a Windows PC or an Apple computer?
Which version of Windows (or MAC OS X ) is on it?
(If a Windows PC, what is its System Type? either 32-bit or 64-bit, and found inStart - Control Panel - System and Security - System .)
Oh. I thought the error message was gone.
Yes, at this rate replacing the printer would be easier, and you have done the reasonable things for the case.
(Don't worry about seeming impatient... we all find broken printers exasperating at times.)