A20B-3900-0042
Fanuc A20B-3900-0042 is a 16i, 18i, 21i A generation DRAM Memory Plug in module. This Fanuc memory card with part number A20B39000042 is a 4MB memory card and plugs into the main system board.
DNC currently have these DRAM memory modules in stock. Can either be used as an upgrade or a replacemend for faulty hardware. If you are unsure if this memory board is at fault; then contact us as we can check, inspect your complete control.