Figure 24. LEDs on the processor board
1 System error LED (yellow)
2 System status LED (green)
3 FPGA heartbeat LED (green)
4 DIMM error LEDs (amber)
Descriptions of LEDs on the processor board
1 System error LED (yellow)
Description When this yellow LED is lit, another one or more LEDs in the server might also be lit to direct you to
the error source.
Action Check system logs or internal error LEDs to identify the failed part. For more information, see
“Front-
operator-panel LEDs and buttons” on page 37
.
2 System status LED (green)
Description The system status LED indicates the working status of the system.
• Fast blinking (about four flashes per second): Power fault or is waiting for XCC power permission
ready.
• Slow blinking (about one flash per second): Power off and is ready to be powered on (standby
state).
• On: Power on.
Action
• If the system status LED is blinking fast over 5 minutes and cannot power on, check the XCC
heartbeat LED and follow the
actions for the XCC heartbeat LED.
• 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:
1. Re-plug the power cord.
2. Remove installed adapters/devices, one at a time, until you reach the minimal configuration
for debugging.
3. (Trained technicians only) If the problem remains, capture FFDC log, and replace the
processor board.
4. If the problem still remains, contact Lenovo Support.
Chapter 2. Server components 45
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