LEDs on Firmware and Root of Trust Security Module

See this topic for the light-emitting diodes (LEDs) on the Firmware and Root of Trust Security Module (Firmware and RoT Security Module).

Note

Some security modules that are installed in the server might not come with LEDs.

Figure 1. LEDs on Firmware and RoT Security Module

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

Table 1. RoT LEDs description
Scenario	AP0 LED	AP1 LED	Fatal Error LED	FPGA heartbeat LED^note	XCC heartbeat LED^note	Actions
RoT security module fatal firmware failure	Off	Off	On	N/A	N/A	Replace the Firmware and RoT Security Module.
	Blinking	N/A	On	N/A	N/A	Replace the Firmware and RoT Security Module.
	Blinking	N/A	On	On	N/A	Replace the Firmware and RoT Security Module.
No system power (FPGA heartbeat LED off)	Off	Off	Off	Off	Off	If AC power is on, but the system board does not have power, then: Check the power supply units (PSU) or power distribution board (PDB). If there is any PSU or PDB error, replace the defective PSU or PDB. If the PSU or PDB is good, replace the system board (see System board replacement (trained technician only)).
XCC firmware recoverable error	Blinking	N/A	Off	N/A	N/A	Information only. No action is required.
XCC firmware is recovered from error	Blinking	N/A	Off	N/A	N/A	Information only. No action is required.
UEFI firmware authentication failure	N/A	Blinking	Off	N/A	N/A	Information only. No action is required.
UEFI firmware is recovered from authentication failure	N/A	On	Off	N/A	N/A	Information only. No action is required.
System is OK (FPGA heartbeat LED is on)	On	On	Off	On	On	Information only. No action is required.

Note

For locations of the FPGA LED and XCC heartbeat LED, see System-board LEDs.

Give documentation feedback