Item Description Status
3 NIC status LED
Solid green = Link to network
Flashing green (1 flash per second) = Network active
Off = No network activity
4 UID button/LED
Solid blue = Activated
Flashing blue:
• 1 flash per second = Remote management or
firmware upgrade in progress
• 4 flashes per second = iLO manual reboot
sequence initiated
• 8 flashes per second = iLO manual reboot
sequence in progress
Off = Deactivated
1
If the system power LED is off, verify the following conditions:
• Facility power is present.
• The power supply is installed and is working correctly.
• The power cord is attached and is connected to a power source.
• The front I/O cable is connected.
2
If the health LED indicates a degraded or critical state, review the system Integrated Management Log (IML) or use
HPE iLO to review the system health status.
If all LEDs described in this table flash simultaneously, a power fault has occurred. For more information,
see "Power fault LEDs".
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 iLO user guide on the Hewlett Packard Enterprise website (http://
www.hpe.com/support/ilo-docs).
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 LED behavior
System board 1 flash
Processor 2 flashes
Memory 3 flashes
Riser board PCIe slots 4 flashes
FlexibleLOM 5 flashes
Table Continued
100 Component identification
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