Same thing happened to my 2200, but the compressed air didn't help. If you remove the 4 screws holding in the plate just below the spindle, it will bring you to the spindle lock, a wood chip was actually lodged in the gear wheel. removing it and blowing out the remainder of the dust had me back in action. My understanding from elsewhere on this site, is that it does not remove the warrantee to perform this function. I also understand that if you have a bit in the collet and can't get the plate off, use an 8 mm open end wrench to "jiggle" the square steel nub just next to the collet. That square nub is part of the ratchet feature of the 2200. This may loosen what has jammed the ratchet.