KD20050-B61X Fujitsu F510 Dispenser Control Board Main PCB Controller Board The KD20050-B61X Fujitsu F510 Dispenser Main Control PCB is the main controller board used in the Fujitsu F510 Cash Dispenser. It serves as a central electronic control component for the dispenser, coordinating communication between the dispenser's mechanical assemblies, sensors and other electronic components. The part is specifically listed as the F510 Main Control PCB / Main Control Board and is