OK, here's
a paraphrase of the information I have from the manual
for the
2311/2312 drives
...
Thank you, Tony!
If you need any more info, I have the full manual. It's over 1" thick,
and athough the repair flowchartts suggest board-swapping, there is a
section of scheamtics, PCB layouts and some information on the ASICs.
-tony