If the system status LED remains off or is blinking fast (about four flashes per second) and the system error LED on the front panel is on (yellow), the system is in a power fault status. Do the following:
Re-plug the power cord.
Remove installed adapters/devices, one at a time, until you reach the minimal configuration for debugging.
(Trained technician only) If the problem remains, capture FFDC log, and replace the processor board.
If the problem still remains, contact Lenovo Support.
5 FPGA heartbeat LED (green)
The FPGA heartbeat LED helps you identify the FPGA status.
Blinking (about one flash per second) : FPGA is working normally.
On or off: FPGA is not working.
If the FPGA heartbeat LED is always off or always on, do the following:
Replace the processor board.
If the problem remains, contact Lenovo Support.
6 DIMM error LEDs (Amber)
LED on: an error has occurred to the DIMM the LED represents.