A20B-1003-0920 Fanuc Spindle control board for the Fanuc Serial Series AC Spindle Servo Unit. This board is in stock fully tested as a serial command pcb in which DNC can offer an urgent repair and testing service and when stock is available service exchange. Full testing and 24 hour repair services (sometimes same-day with amble warning) upon the A20B-1003-0920 Fanuc spindle boards. The power drive units that the A20B-1003-0920 is fitted to are Fanuc's serial 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.