Dear forum members ,

I've some strange problem on St-30 Hass Lathe , afer main board battery fail, I have uploaded the machine via the service usb that came with the machine ( it has the "original" backup from the assembly day).
But after uploding all the content on the usb (using "restore all" )
Strange thing happenned it looks like I've lost C axis with alarm "c axis drive alarm fault "

After disabling the c axis the machine works fine .

Does anyone know this problem?

Much appreaciation to the helpers!!