Fanuc A20B-3300-0393 B Generation i CNC. This Fanuc servo card with part number A20B-3300-0393 is a 2 axis controller utilising the FSSB interface system. This allows the CNC to control 2 axes via the Fanuc serial servo bus system on many Fanuc series 21i model B controlled machines.
DNC currently have these FSSB 2 axis servo controller PCB in stock.
If you are having problems diagnosing the fault on Fanuc i series controls consult our Fanuc alarms and error code pages.