The health LEDs are driven by the BMC; the power LED is driven solely by hardware. BMC code
determines the state of the internal and external health LEDs, while the iLO 2 MP code, examining
incoming events using its event dictionary, determines the state of the system health LED.
External Health LED
The front panel external health LED indicates the status of the components that are externally
serviceable. Whenever the external health LED is lit, the corresponding CRU should be lit for
the failed component.
Failures that cause the external health LED to light do not cause the internal health LED to light.
These two LEDs cover failures of different components.
Table 5-5 External Health LED States
LED Color
Flash Rate
Definition
Off
LED Off
Health good on all external CRUs and system power is
off.
Green
Steady
System power is on; externally serviceable components
(usually accessible from front or back, such as fans and
power supplies) are okay.
Amber
Flash 1 Hz
An externally accessible CRU failed (system is on or in
standby mode). Usually, this is a power supply or fan
failure. Check front/back LEDs for failed component.
Amber supersedes green. This LED is cleared when all failed externally accessible entities are
repaired and report that they are good, or on any ac/standby power cycle.
The iLO 2 MP displays the following strings in its Virtual Front Panel for the three states of this
LED:
Table 5-6 VFP External Health Description
<none>
Off
External parts, including fans and power supplies, okay
On green
A redundant, externally accessible CRU failed (check front/back LEDs)
Flashing amber
Internal Health LED
The front panel internal health LED indicates the status of the components internal to the system
server. These components require the user to open the system in order to be serviced. This LED
maintains its state when the system is in standby mode (system power turned off but ac power
still applied to the system).
On larger Integrity servers that have a diagnostic LED board, this LED tells the service person
to view that board for more information about the server failure. If the internal health LED is
green, there is no fault information displayed on the diagnostic LED board, and no fault
information displayed through LEDs that are inside the server.
The amber indicators on this LED must correspond to internal health conditions that light other
LEDs in the box, indicating which component must be serviced to correct the fault. For example,
the diagnostic LED board has a fault indicator lit when this LED is in the amber condition. Failures
that cause the internal health LED to light do not cause the external health LED to light.
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Troubleshooting