Unmodified Orac question

[asto]

Hi everybody!

Just before yesterday I bench tested my Orac and it was running fine.
So I moved to the next step which was to put everything back in place and start cutting.

But the machine did not like this idea and what I am getting now is...Drives glowing nice green led each and the distinctive oscillator sound that says we are ready to run your motors. Then I select manual mode and pressing arrow keys to move the selected axis, the screen shows actual coordinate position changing but none of the motors is willing to spin.
One of them I tried turning by hand but could not. This one generates strange and varying oscillator sounds even tough is immobilized. And the second can be turned by hand almost effortlessly.

I am sure many of you guys here can view things to which it looks I am totally blind. As considering all current machine symptoms I can not even come close to what may have caused this problem.

Any advise and help is highly appreciated.

regards

!