Fuji s3000 and others ... repair parts, service...

Question

I have acquired a fuji s3000. I am a 30 year+ digital electronics technician interested in repairing digital cameras as a business. I have successfully done that a few times. I wrote Fuji for parts lists and service manuals and they gave me some bogus run a round like the voltage in the camera might kill me. I've been around mfrs and service situations long enough to know that as a 3rd party service company it is illegal for a manufacture not to provide parts to me or an end user.Being new to this business, my question is how do you obtain parts, service manuals and run a service business if the manufactures try to snowball you like this?