HURCO BMC-20P retrofit

I would have to look over the manual again, but that looks to be controlled by the servo drive unless I am misreading the schematics. All you have to do is pick which Gear enable you want to use on the input side. 

I was called to fix this, again!
It looks grim for now, 7i92 was taken by someone last year, this year they lost the 7i77 as it was inside the Elumatec for testing a while back, and they lost a whole motor with coupler! Damn, some people have no respect for machines at all. The amount of metal dust on it was huge.
Ordered some Mesa boards from www.eusurplus.com and 2 of 7i96S from www.welectron.com so in the meantime i might yank out the 7i92 and 7i77 from my Mazak. Also ordered a 750W china drive and motor and a 15KW cheap china VFD.
The existing Yaskawa spindle drive does not turn on at all on first try, but it does on second try, sometimes with F600 error and sometimes it just works and jogs happily.
The PC and power supply are also dead but the monitor works.
Tomorrow, most probably, changing the PC, testing the state of Argon drives, jogging the spindle since i forgot how to run if from the panel.
Oh joy ...

Forgot to add the picture, this was the state the machine was when i last went there.
Yes, those are two trash cans resting on the Hurco, so i promptly removed them and cleaned the several years of dust from it.

I never heard back from the owner, probably got a heart attack from the list of Mesa stuff to order!