Here's the topside from a couple of views. I couldn't get a decent shot from the bottom.
The top bracket that the alternator moves in:
IMG_2855
The adjustment screw that I can turn by hand (after initial loosening) to get the belts snug:
IMG_2854
The 2 bolts on the top closer to the block and the one accessible from below need to be loose but not totally disconnected so that the alt will move properly. But this is on a 300D, not the SD.