A20B-1003-0300 Fanuc Spindle control board for the Fanuc I Series AC Spindle Servo Unit. This board is in stock fully tested as a digital command pcb in which DNC can offer immediate service exchange - shipping out today to anywhere in the world, as well as offer full testing and 24 hour repair services (sometimes same-day with amble warning) upon the A20B-1003-0300 Fanuc spindle boards. The power drive units that the A20B-1003-0300 is fitted to are Fanuc's I spindle series amplifiers - which are also supported by DNC, as well as transistor modules for the drive base units and fuses for the drives and spindle control boards.