Hi Carl

Not sure if this is any help or not but I do know that these machine have to have certain parameters before they will datum.

I am just wondering if the batteries have gone if all the parameters have been lost.

I have just done a quick google and found the info so you should find them no problem.

We have one of these machine at work and I do know that after power up you press the CE button then the yellow power up button then the green button then as you say the Z axis should datum first so long as the feed over ride is turned up.

Andy