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Table 34. System-board-assembly LEDs (continued)
Description
LED
FPGA heartbeat
The FPGA heartbeat LED helps
5
LED (green)
you identify the FPGA status.
• Blinking (about one flash per
• On or off: FPGA is not
System status
The system status LED indicates
6
LED (green)
the working status of the system.
• Fast blinking (about four
• Slow blinking (about one flash
• ON: Power on
DIMM error LEDs
LED on: an error has occurred to
7
(Amber)
the DIMM the LED represents.
LEDs on the Firmware and RoT Security Module
The following illustrations show the light-emitting diodes (LEDs) on the ThinkSystem V3 Firmware and Root
of Trust Security Module (firmware and RoT security module).
Figure 479. LEDs on the firmware and RoT security module
AP0 LED (Green)
1
second): FPGA is working
normally.
working.
flashes per second): Power
fault or is waiting for XCC
power permission ready.
per second): Power off and is
ready to be powered on
(standby state).
AP1 LED (Green)
2
Action
If FPGA heartbeat LED is always off or always on, do the
following:
1. Replace the processor board.
2. If the problem remains, contact Lenovo Support.
• 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
• 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 technician only) If the problem remains,
capture FFDC log, and replace the processor
board.
4. If the problem still remains, contact Lenovo
Support.
For more information, see
481.
Fatal Error LED (Amber)
3
Chapter 8
LED.
"Memory problems" on page
.
Problem determination
473
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