Servo Drive Issues

I'm dealing with an old Motch Single Spindle and its been down for two weeks. When the machine is readied up, both X and Y drives (A06B-6058-H005) fault out with HC alarm LED. I think the drives are Alpha series but the facing is gone from both. The operator manual says to look at GFZ-65005E manual from GE Fanuc, does anyone have this electronically or a link?

So far I've checked incoming voltage. Since its two separate systems faulting at the same time, I'm thinking the Fanuc Controller (A16B-2200-0080) is crapping out or a parameter got changed for the motor setup which I don't know how to access on the 15T controller.

Can anyone help me out?

Replaced the Servo Controller and the problems seem to be resolved.

Have you found GFZ-65005E?
I need to know some servo parameters description.
I have Fanuc-15M and some problems with Y axis (SV003 - abnormal servo current) in sleeping mode (not moving at all)