Thank you for your support Al_The_Man, I have a small experience with CNC and the problem I have was caused from this. Today, I can restore with the help of a technician the 80% of the machine, the only thing that don't work yet is the orientation of the spindle (C axis).

As you suggest me, today I speak with this technician about the figure of a retro-fitter and probably we find one near here that will come to our company in two week and I hope to solve my problem.

Anyway, if you know other forum where I can have some other informations about my machine...your support is very appreciated.