Fanuc alarm 917: DRAM PARITY : (BYTE 5)
system alarm · Fanuc 0i-D
What it means
Parity error detected on byte 5 of the system DRAM. The byte index localises the failure to one memory bank, which helps a board-level repair shop target the faulty devices rather than swapping blindly.
Likely causes
- Defective DRAM bank for byte 5
- Thermal stress inside the electrical cabinet
- Electrical noise event
Need the part urgently?
Send us alarm 917 with your machine details — typical RFQ turnaround is 24–48h.