**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 Pre-boot Health Summary when the server will not
power on. For
more information, see the latest
HPE iLO User Guide
on the
.
Power fault LEDs
The following table provides a list of power fault LEDs, 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
Removable HPE Flexible Smart Array
controller/Smart SAS HBA controller
6 flashes
System board PCIe slots
7 flashes
Power backplane or storage backplane
8 flashes
Power supply
9 flashes
Systems Insight Display LEDs
The Systems Insight Display LEDs represent the system board layout. The display enables diagnosis with the
access panel installed.
14
UID button functionality
Summary of Contents for BCD221
Page 7: ...Documentation feedback 157 Contents 7 ...
Page 27: ...Component identification 27 ...
Page 43: ...Operations 43 ...
Page 124: ...Box 2 to SAS Expander All boxes 124 Cabling ...
Page 126: ...Box 2 Box 3 126 Cabling ...