Maho MH 600 P

Hi everyone,

I have electrical problem with Maho MH 600 P 1978 year of production - Heidenhain TNC121 and I need wiring diagrams to fix this problem. Could anybody help my in this subject?
Motors working fine and all function from electrical cabinet but not from steering panel. I thinking that is some protection in way from cabinet to panel. I already checked relays, fuses, contractors, transformer and other equipment all looks ok. But should be something to protect starting engine like limit switches (also checked) or something else but what I don't know.
Hydraulic breakers, clutches, potentiometer, emergency stop button working from panel, only engines start buttons and hydraulic changing tools not working.

Many thx for any help
Kris