Fanuc Starting System Software Please Wait |verified| Jun 2026

Wait to allow all capacitors on the power supply and drives to fully discharge. Turn the power back on and observe the screen. Step 2: Access the FANUC Boot System Menu

Swap the PSU with a known working unit or rebuild the existing power supply module. 📋 Best Practices for Future Prevention

If the hardware is healthy, the system software or SRAM data may be corrupted, often due to a dead backup battery or an improper shutdown during a write cycle. Facebook·FANUC Robot Programmers fanuc starting system software please wait

to allow the capacitors to drain completely.

If clearing the SRAM does not change the "Please Wait" screen, hardware modules may have poor electrical contact due to machine vibrations. Shut off all electrical power to the machine. Wait to allow all capacitors on the power

Navigate back to the main menu and select to load the fully restored control software.

If this message remains on the screen indefinitely, the boot sequence has stalled. A frozen boot screen indicates that the main central processing unit (CPU) cannot complete its handshake with the graphic control circuit, local memory modules, or peripheral FROM/SRAM modules. Primary Causes of a Frozen Boot Sequence 📋 Best Practices for Future Prevention If the

When you flip the power switch on a FANUC control (such as the 0i-D, 0i-F, 16i, 18i, or 21i series), the system runs a basic input/output initialization before launching the core CNC software. If the screen hangs on the startup message indefinitely, the boot sequence has been interrupted. The most common culprits include:

If the system still fails to boot, the next step is to interrupt the normal startup process to access the controller's low-level maintenance functions. This is done by entering (sometimes called Initial Program Load or IPL mode).

Using a digital multimeter, check the test points on the FANUC PSU. If the +5V rail reads low (e.g., 4.6V), the memory modules cannot operate. How to Recover and Restore Data

Make it a strict policy to back up your SRAM data to a dedicated CompactFlash card or network drive every six months, and always before making any parameter changes.