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Table 18. LEDs description
Scenario
RoT security module fatal
firmware failure
No system power
XCC firmware recoverable error
XCC firmware is recovered from
error
UEFI firmware authentication
failure
UEFI firmware is recovered from
authentication failure
System is OK
Note: For locations of the XCC heartbeat LED, see
System-board LEDs
The following illustrations show the light-emitting diodes (LEDs) on the system board.
Press the power button to light the LEDs on the system board when the power source has been removed
from the server.
Fatal
Error
AP0 LED
AP1 LED
LED
Off
Off
On
Blink
N/A
On
Blink
N/A
On
Off
Off
Off
Blink
N/A
Off
On
N/A
Off
N/A
Blink
Off
N/A
On
Off
On
On
Off
"System-board LEDs" on page
XCC
heart-
beat
note
LED
Actions
N/A
Replace the firmware and RoT
N/A
security module.
N/A
Off
If the AC power is on, but the
system board assembly does not
have power, then:
1. Check the power supply unit
(PSU) or power distribution
board (PDB). If the PSU or
PDB has any error, replace it.
2. If there is no problem with
the PSU or PDB, replace the
system board.
N/A
N/A
N/A
Information only. No action is
required.
N/A
On
35.
.
Chapter 2
Hardware components
35
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