Fanuc Starting System Software Please Wait -

| | Primary Cause | Recommended Fix (Priority Order) | | :--- | :--- | :--- | | Machine idle for weeks/months, then hangs on "starting" message | Memory backup battery discharged, causing parameter loss | (1) Check / replace mainboard battery; (2) Reload from a saved parameter backup; (3) Manually re-enter machine parameters. | | Intermittent hangs; works fine after another hard reset | Failing power supply capacitor; loose internal connector | (1) Check mainboard for bulging capacitors; (2) Reseat all internal connectors; (3) Verify power supply voltages with a multimeter. | | System hangs after a power failure or "brown-out" | Corrupted file in FROM or SRAM due to improper shutdown | (1) Access Boot Monitor and perform a Controlled Start; (2) Attempt an SRAM clear; (3) Perform a full system restore. | | Hangs accompanied by clicking/grinding sounds from cabinet | Mechanical failure of the legacy HDD (Hard Disk Drive) | (1) Do not power cycle repeatedly ; (2) Replace the HDD immediately; (3) Restore the system from a full image backup to a new SSD if possible. | | Hangs at same point always; mainboard LED shows a specific non-progressing code | Hardware fault on mainboard (CPU, RAM chip, or core logic) | (1) Attempt Boot Monitor for any response; (2) If no success, the mainboard requires professional repair or replacement by FANUC or an authorized shop. |

Store copies on two different media (CF card + network drive).

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Internal components within the FANUC PSU degrade over time, leading to electrical "noise" or ripple currents.

Your physical screen, CPU, and basic boot loader logic are functioning. The issue is likely software corruption, a bad SRAM file, or an issue with the main FROM data. fanuc starting system software please wait

FANUC System Software is stored on a flash memory device (typically a daughter card or a chip on the main board—marked FS16i, FS31i, etc.). Over time, power fluctuations, electromagnetic interference (EMI) from a nearby welding robot, or simply aging silicon can cause single-bit errors.

Ensure the fanuc controller cabinet is clean and that fans are functioning to prevent overheating. | | Primary Cause | Recommended Fix (Priority

To isolate and resolve the issue safely, execute the following troubleshooting steps in sequence. 1. Perform a Hard Power Cycle