Firmware and RoT security module LEDs

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 1. LEDs on the firmware and RoT security module

1 AP0 LED (Green) 2 AP1 LED (Green) 3 Fatal Error LED (Amber)

Table 1. LEDs description
Scenario	AP0 LED	AP1 LED	Fatal Error LED	Actions
RoT security module fatal firmware failure	Off	Off	On	Replace the firmware and RoT security module.
RoT security module fatal firmware failure	Blink	N/A	On	Replace the firmware and RoT security module.
No system power (FPGA heartbeat LED off)	Off	Off	Off	If the AC power is on, but the system board does not have power, then: Check the power supply unit (PSU) or power distribution board. If the PSU or power distribution board has any error, replace it. If the PSU or power distribution board is good, replace the system board.
XCC firmware recoverable error	Blink	N/A	Off	Information only. No action is required.
XCC firmware is recovered from error	On	N/A	Off
UEFI firmware authentication failure	N/A	Blink	Off
UEFI firmware is recovered from authentication failure	N/A	On	Off
System is OK (FPGA heartbeat LED is On)	On	On	Off

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