Installing the System
Troubleshooting
Chapter 3
127
Figure 3-52 Control Panel LEDs and Buttons
Table 3-12 Front Control Panel LED Definitions
LED/
Button
State Flash Rate Color Description
System Running Steady Green System normal—OS up and running
System Booting Flashing at
0.5 Hz
Green OS booting or at BCH
System Attention Flashing at
1 Hz
Yellow Warning: System needs attention.
Redundancy lost, component failure pending.
(Additional information can be found in the
System Log)
System Fault Flashing at
2 Hz
Red Hard fault, system halted
System Off Off N/A System off
Power On Steady Green Power normal
Power On Flashing at
1 Hz
Yellow Housekeeping voltage present
Power Off Off Off Power off
Disk LED Flashing at
rate of disk
activity
Green Disk activity
Thermal
LED
OK Steady Green Thermal OK
Thermal
LED
Warning Flashing at
1 Hz
Yellow Thermal warning
Locator
LED/button
Flashing at
1 Hz
Blue System locator LED can be remotely or
locally activated/deactivated
1 2 3 4 LAN System
System
LED
Power On/Off LED
Power Button
Diagnostics LEDs
(Disabled)
Locator Button and LED
LAN
LED