Mazak Quick Turn Nexus 250 M Tailstock will not reference

Hi

I was wondering if anyone could help me, I am working on the machine in the title. The operator replaced the battery in the Mitsubishi drive and it has lost its position.

I powered down the machine and started from scratch to set the reference point as per the procedure in the manual.

But it does not seem to find the grid in the when moving the tailstock. I have tried two drives and two motors and still the same.

Any help would be appreciated.

Regards