Fanuc Memory board type SRAM Module reference
FANUC A20B-3900-0061 for sale. SRAM Module 1M for
Fanuc 16i, 18i, 20i model. Fanuc DIMM memory module
capacity of 1MB ready to install on your CNC Fanuc i series master board.. This Fanuc i series DIMM Module A20B-3900-0061 comes with a warranty.
If the SRAM data check method (parity or ECC check) to be used after the motherboard is replaced differs from the one used before replacement, a parity alarm or ECC alarm will occur when the power is switched on, possibly leading to loss of the SRAM memory contents. To avoid this problem, make a backup copy of the SRAM memory before replacing the motherboard and restore the SRAM Memory contents using the backup copy after motherboard replacement. 
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