For those interested with the Service Manual of Samsung GX-10. it can be found also on the web (info found on the same french forum thanks to them:
Pentax K10D - K20D
Manual presents all the steps to adjust SR/AF etc.
Very technical and requires a lot of equipment and software that we do not have...
So if you really want to have a look at it google : dscservicemanual
cheers,