Main CPU board for 21i control units. Reworked and burned in for 24 hours in a test rack; SRAM verified and the backup circuit checked.
| Compatible systems | Fanuc 21i |
| Condition | Refurbished — bench-tested and re-certified |
| Warranty | 90 days functional |
| Lead time | Source to order — 2–4 weeks, confirmed on quote |
| Weight | ~0.9 kg |
| Board family | A16B |
| Function | Main CPU / axis control |
| Burn-in | 24 h at temperature |
| Image note | FANUC brand logo — product photo unavailable. |