Chapter 5
Troubleshooting
Troubleshooting Using LED Indicators
162
Figure 5-2 shows the front control panel LEDs.
Figure 5-2
Front Control Panel LEDs
Table 5-3 lists the front control panel LED definitions.
Table 5-3
Front Control Panel LED Definitions
LED/
Button
State
Flash Rate
Color
Description
System LED
Running
Steady
Green
System normal. OS up and running.
System LED
Booting
Flashing at
0.5 Hz
Green
OS booting or at BCH.
System LED
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 LED
Fault
Flashing at
2 Hz
Red
Hard fault, system halted.
System LED
Off
Off
N/A
System off.
Power LED
On
Steady
Green
Power normal.
Power LED
On
Flashing at
1 Hz
Yellow
Housekeeping voltage present.
Power LED
Off
Off
Off
Power off.
Disk LED
Active
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
Active
Flashing at
1 Hz
Blue
System locator LED can be remotely or
locally activated/deactivated.
Power Button
Disk LED
Power LED
TOC/NMI Button
System LED
Thermal LED
Locator
Button/LED