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That is a severe error code. But sometimes it can be treated and fixed by a few simple actions.
Open the top cover as if replacing ink cartridges, so that the locking arm at the left holds up the top cover.
Like this: https://help.brother-usa.com/euf/assets/themes/CCOE/BHS13/Hardware/MFCJ4510DWOpenScannerCover.jpg
Examine the interior of the printer for paper scraps, loose parts, paper clips or staples, etc.
If the cartridge carriage is over to the right, press and hold down the red X button for about 5 seconds, then release it. The carriage should move to the center (or try to at least.) Then you can examine to the right inside the printer and remove and scraps or obstructions.
Close the top cover again after having done this.
Turn the printer around, open the rear cover and examine for and remove any paper or paper scraps however small.
Then close the rear cover.
And then unplug the machine, and leave it unplugged from power for at least 15 minutes, or longer.
After which, try the machine again, plug it in and run a one-page photocopy from it if possible, to test it.
If that cures it, it is rare but a reason to be glad.
If the error message persists, you have a severe problem with the printer, that will require that the printer be service-repaired. It would be well to check whether it is less than a year from purchase date and take care of taking it to repair promptly, since the warranty runs out a year after purchase date, and warranty servicing is free-of-charge.
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