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**If the health LED indicates a degraded or critical state, review the system IML or use iLO to review the
system health status.
†Facility power is not present, power cord is not attached, no power supplies are installed, power supply
failure has occurred, or the power button cable is disconnected.
UID button functionality
The UID button can be used to display the Server Health Summary when the server will not power on. For
more information, see the latest HPE iLO 5 User Guide on the Hewlett Packard Enterprise website.
Front panel LED power fault codes
The following table provides a list of power fault codes, and the subsystems that are affected. Not all power
faults are used by all servers.
Subsystem
System board
Processor
Memory
Riser board PCIe slots
FlexibleLOM
Removable HPE Smart Array SR Gen10 controller
System board PCIe slots
Power backplane or storage backplane
Power supply
Systems Insight Display LEDs
The Systems Insight Display LEDs represent the system board layout. The display enables diagnosis with the
access panel installed.
14
Component identification
LED behavior
1 flash
2 flashes
3 flashes
4 flashes
5 flashes
6 flashes
7 flashes
8 flashes
9 flashes
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