Hitachi Advanced Server HA820 G2 User Guide  17 
Item  Description  Status 
•  Flashing green (1 Hz/cycle per sec) = Network 
active 
• 
Off = No network activity
 
3  Health LED
1
 
•  Solid green = Normal 
•  Flashing green (1 Hz/cycle per sec) = iLO is 
rebooting 
•  Flashing amber = System degraded 
• 
Flashing red (1 Hz/cycle per sec) = System critical2
 
4  Power On/Standby button 
and system power LED
1
 
•  Solid green = System on 
•  Flashing green (1 Hz/cycle per sec) = Performing 
power on     sequence 
•  Solid amber = System in standby 
• 
Off = No power present3
 
1
. When all four LEDs described in this table flash simultaneously, a power fault has occurred. 
2
. If the health LED indicates a degraded or critical state, review the system or use iLO to review the system 
health status. 
3
. Facility power is not present, the 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 iLO 5 User Guide.
 
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 flashes 
Processor  2 flashes 
Memory  3 flashes 
Riser board PCIe slots  4 flashes 
OCP adapter  5 flashes 
Storage controller  6 flashes 
System board PCIe slots  7 flashes