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Chapter 5
Troubleshooting
Troubleshooting Using LED Indicators
117
Front Control Panel LED Indicators
The front control panel LEDs show you the server status at a glance. If warning or attention lights are
flashing, then you should to query the QuickFind diagnostic panel or management processor for further
information.
Figure 5-1 Front Control Panel
Table 5-1 Front Control Panel LED Definitions
LED/
Button
State Flash Rate Color Description
Server Running Steady Green Green: Server normal-OS up and running
Server Booting Flashing at
0.5Hz
Green Flashing green: OS booting or at EFI
Server Attention Flashing at
1 Hz
Yellow Flashing yellow: Warning-server needs
attention. Redundancy lost, component
failure pending.
Server Fault Flashing at
2 Hz
Red Flashing red: hard fault, server halted
Server Off Off N/A Off: server off
Power On Steady Green Green: power normal
Power On Steady Yellow Flashing yellow: Housekeeping voltage
present
Power Off Off Off Off: Power off
Disk LED Flashing at
rate of disk
activity
Green Flashing green: disk activity
Thermal
LED
OK Steady Green Green: thermal OK
Thermal
LED
Warning Flashing at
1 Hz
Yellow Flashing yellow-thermal warning
Locator
LED/Button
Flashing at
1 Hz
Blue Flashing blue: server locator LED may be
remotely or locally activated/deactivated
Power LED
Thermal LED
TOC/NMI Button
Power Button
Disk LED
Server LED
Locator
Button/LED