A20B-3900-0061 ¦ 512KB SRAM module
Fanuc A20B-3900-0061 memory module. CNC stock this 1MB SRAM pcb for a variety of different 16i, 18i, 21i model A controllers. This plugin module is a small modular device which plugs into the main master pcb. Usually accompanied with other boards including the CPU, Graphics driver and FSSB servo controller and other memory cards such as DRAM and FROM smds.
Currently CNC only supplies this SRAM PCB for outright sale. We offer no other services, except for testing your control system; if this processor is found suspect. If repair, then we require the entire CNC with all boards plugged in and full system backup.
A20B39000061 is supplied with a 12 month warranty.