A16B-3200-0020 services available. Testing and system repair!

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  • 180 day warranty on refurb parts, repairs.

  • 12 month warranty on motors & NEW OEM parts.

  • 2 Year warranty on DNC monitors, psu’s, memory.

  • Order yours before 4pm for same day dispatch


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a16b-3200-0020 fanuc 21-tb main

FANUC A16B-3200-0020

Fanuc main CPU belong to the SERIES 21 model B. This boards supports multi axis control with single, twin spindle servo unit control. A16B-3200-0020 is a surface mount main board which is the principle CPU controlling many other boards allowing the machine tool to function. Plug in SMD for this 21-B master are axes control, spindle smd, graphics, I/O boards, various memory options and much more.

We offer limited 21-TB testing facilities whether its a BOOT issue, graphics, NC input or output via the I/O board or a problem with other aspect of this card. We have been repairing these boards for the last 20 years. Repair is usually no problems and we try to carry these boards in stock for exchange.

A16B32000020 ships from Neuhausen, Germany

As a rule we always try to keep these CPU in our stocks. We carry fully refurbished A16B-3200-0190 MAIN cards. These are fixed by us where we have fully refurbished the units replacing all the common components that fail on these cards as well the fault. These PCB’s are normally supplied on an exchange basis to save you money and time opposed to other non Fanuc specialist companies.


Usually available to ship same day on exchange orders fully tested with warranty. If unsure if your masterboard is indeed faulty then ship your board in for test, inspection.

Interested in learning more? Contact us if you wish to discuss options for exchange, repair or testing of your A16B-3200-0020 pcb at +49 (0) 7158 984130 or by email We’d be happy to answer your questions!

The 21-B MAIN pcb is always in group stock and normally in stock in Germany.