Chapter 6
Troubleshooting
Troubleshooting Using LED Indicators
128
Front Control Panel LEDs
The front control panel LEDs show you the system 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 6-1 Front Control Panel
Table 6-1 Front Control Panel LED Definitions
LED/
Button
State Flash Rate Color Description
System Running Steady Green Green: System normal-OS up and running
System Booting Flashing at
0.5Hz
Green Flashing green: OS booting or at EFI
System Attention Flashing at 1
Hz
Yellow Flashing yellow: warning-system needs attention.
Redundancy lost, component failure pending.
System Fault Flashing at 2
Hz
Red Flashing red: hard fault, system halted
System Off Off N/A Off: system 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: system locator LED may be remotely
or locally activated/deactivated
Power LED
Thermal LED
TOC/NMI Button
Power Button
Disk LED
System LED
Locator
Button/LED
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