I have a Toyoda FA550 with a Fanuc 15 MA control.
I received the machine DOA.
First, replaced the Fanuc Input Unit which was not operating
Now,
I hit the "on" button on the input unit.
The 2 amp fuse on the Fanuc Power supply (F34) in the IO rack blows then the input unit shows the red alarm LED. This will reset after hitting the "off" button.
I first removed all of the 24V input and output connectors from the IO cards to see if that helped. Replaced fuse, same thing happened.
It is still has all of the AC wires connected.
I understand wiring and some electronics but not the control.
Any help on what, where to test from here?
Is the 2 amp fuse on the 24v side or something different altogether.
Thanks,
TME