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If you scanned hundreds of pages, then they could not all be in memory still - that is not possible with a Brother machine of this model.
However, it may be that the scanning of hundreds of pages *at once*, all in one job or practically, might have overtaxed and overheated the scanner hardware and electronics, enough to damage it.
Can you still run a photocopy from the machine? if so, and if it comes out, then the scanner hardware is OK. (The only part that is not used in a photocopy that is used in a scan to a computer, is the transmitting or interface electronics used to send the image data to the computer. And if you can print through that interface still, then that's not at fault either.)
When you try to run a photocopy, if it fails, is
A. the scanner bar (under the glass sheet) moving? (Photocopy a one-sheet original face-down on that glass sheet, in order to tell.)
B. the scanner bar lighting up?
C. neither one is