hi,
I had the same problem with my machine when I bought it.
There was a undervoltage after the secondary of the second transformer. It was rewired from 480V to 230V (208v) ? That was my problem, I rewired just the transformer on the top (main) everything started up and seemed to be normal (panel powered up, working light was bright but still some errors on DUMP board LED) but I couldn't get rid of the z-axis open loop error. After I rewired the second transformer (you have to jump some connectors, should be a diagram on the transformer) I got rid of the error and everything's working just fine.
I hope this help.
Good luck |