I just my K10D in for servicing because 1) The date was stuck on Jan 1, 2052 @ 12:00:00AM and could always revert to this even if you changed it and 2) It was backfocusing, at least with my FA50 and FA35.
I sent my camera body in by itself and not any lenses and asked listed both issues. I got my camera back today, now with revision 8.1 and here's the work done:
- Replacement of printed circuit boards and/or image sensor. Adjusted and calibrated all circuits for proper functioning.
- Replacement or adjustment of electronic autofocus circuit including focus motor and encoder, CCD focus device, and laser alignment of mirrors.
Focusing is now MUCH improved, though after all that work, I have no idea if it's something from software, or all the adjustment, laser aligning and replacing of boards and motors. Probably the later...
On a fun side note, my camera, purchased in April 2007 now shows a 4-30-2008 manufacture date (about 3 days after they received my camera for repair) which I assume is coming off the new mainboard that was replaced inside.