Manual focus not working on finepix S200EXR

I contacted a repair company who said that they can not repair it as the parts are not available. I have read that this camera has a lot of problems with ribbon cables. I would like to disasemble it and check the cable. To get to the inside do I just remove all the very small black screws? I do not have a workshop schematic diagram. Can you refer me to any videos or guides?