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My canon mf624cw won't scan. When I try scanning to computer it asks me to confirm destination over and over again, and then says an error has occurred. When I try scanning to USB it doesn't recognize that a flash drive has been inserted. It used to ...

Canon MF624CW won't copy - it will print and scan fine, but when I try to copy, the light for processing stays blinking and no copy is made. I've updated my firmware, still won't work. I've also of course tried to turn it off and back on, unplug the ...