Replace the lithium battery inside the CNC unit (usually a black or yellow FANUC battery pack). Note that if the memory is already lost, you will need to reload your original backup files via the Boot System menu. 4. Faulty Power Supply Unit (PSU)
What is the of your FANUC control (e.g., 0i-MC, 18i-TB, 31i)? fanuc starting system software please wait
Hold S and P keys (on some models) during power up to enter the boot loader menu. 4. Replace Back-Up Batteries Replace the lithium battery inside the CNC unit
Troubleshooting the FANUC "Starting System Software Please Wait" Boot Loop Faulty Power Supply Unit (PSU) What is the
If your SRAM data is corrupted, the control will freeze on startup. Clearing the SRAM wipes the corruption, allowing the core system software to load. You will get a blank, clean control system that requires a parameter reload.
This article provides a comprehensive overview of why this message appears, how to troubleshoot a stuck system, and preventative measures to ensure smooth startups. What Does "Starting System Software Please Wait" Mean?