Here is a video explaining how to calibrate the FANUC robot that is on LAR. Basically you just need to calibrate the joint position to Zero, the world coordinates will be calibrated depending on your joint coordinates. Good luck.
Here is a piece of advice. If you want to change the batteries from the robot. Do it while the console is on. This way you wont need to recalibrate the FANUC.
If you have any questions, please feel free to ask.
Until next time