Hellou,

i have old Hwacheon cnc machine with fanuc series O-T. Suddenly in the middle of program the machine stopped and there where three alarm codes. I though that the problem was with servo and i had a spare one. So i tryed to change new servo amplifier module on to machine. It was excatly the same module, A06B-6079-H206.

After i change it machine says alarm 946 and it wont even start and when i putted the old module back it says the same error 946. Can anyone help me where the problem is maybe ?.