Fanuc system o-b pcb repair and fanuc o-b controls repairs and fanuc ot om pcbs exchange.These controls are usually referred too as the Fanuc 0T and Fanuc 0M controls, though they are OB though can be OC's. DNC offer exchange services on Fanuc OB master pcbs, and Fanuc OB motherboards, as well as operator pcbs, i/o pcbs, graphics boards, mdi/crt panels and much more. Below is our list of Fanuc O-B series system pcbs and peripheral boards, that make up the following systems. 0TB, 0MB, 0TTB, etc. DNC hold a considerable stock of 0B master cards boards, digital master pcbs and peripheral cards.