The hardware checks basic electrical and component integrity.
Re-initializes the software to factory defaults. Use this only as a last resort if you have no backup. Wipes all programs, mastering, and PLC data. Image Restore
Locate the test points on the FANUC Power Supply Unit (typically found on the main control slot).
If you see a number or letter, consult your FANUC Maintenance Manual. For example, an "E" might indicate a system error, while a "C" might indicate a graphic module issue. Step 3: Access the Boot System Screen fanuc starting system software please wait
Thermal degradation, component failure, or a failed internal bus controller.
Protect the CNC control from voltage spikes and brownouts by installing a dedicated surge protector or uninterruptible power supply (UPS) on the control circuit.
When a FANUC CNC displays "Starting system software please wait" (or similar), the controller is initializing firmware, loading system software modules, or performing a firmware/self-check after power-on or a reboot. It can be normal for several seconds to a few minutes, but extended or repeated hangs indicate a problem. The hardware checks basic electrical and component integrity
A hardware fault exists on the main board, module, or power supply.
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While a dead battery usually triggers a parity alarm, severe voltage fluctuations during a low-battery state can corrupt the volatile SRAM during boot-up. Step-by-Step Diagnostic and Troubleshooting Protocol Wipes all programs, mastering, and PLC data
Release the keys only when the yellow-and-black or monochrome menu appears. Essential Recovery Actions inside the Boot Menu
To help narrow down the root cause of your system freeze, please let me know:
The motherboard is getting power and attempting to boot.
If the system fails to boot and the above steps do not resolve the issue, the next stage involves the . This is a low-level environment that resides in ROM and can function even if the main control software is damaged.
Select this option immediately to save whatever remaining parameters, programs, and pitch error compensation data you have left onto a PCMCIA memory card.