A person from France just asked me for the service manual and I do not have this manual. These pictures below are how I Un-assembled my model and serviced it with new belts and sold it to a current member in this NEW site. FISHER SC-300K Keyboard boombox How I serviced mine w/o a Service manual. The picture's where I measured the belt should be self-explanatory, as for the rest of the pictures, I took them as I needed them for me to remember where parts went and or how to put it back together, Enjoy. p.s. I think I still have some video's of this model that I have not uploaded since about 2015 about this model.