Figure 1-8
Control Panel
Power LED
Power Button
TOC/NMI Button
Table 1-3 and Table 1-4 list the control panel LED and the switch and button LED status and descriptions.
Table 1-3
Control Panel LED Definitions
LED/ Button
System LED
System LED
System LED
System LED
System LED
Power LED
Power LED
Power LED
Disk LED
Thermal LED
Thermal LED
Locator Button/LED
Chapter 1
State
Flash Rate
Running
Steady
Booting
Flashing at
0.5 Hz
Attention
Flashing at
1 Hz
Fault
Flashing at
2 Hz
Off
Off
On
Steady
On
Flashing at
1 Hz
Off
Off
Flashing at
rate of disk
activity
OK
Steady
Warning
Flashing at
1 Hz
Flashing at
1 Hz
System LED
Disk LED
Thermal LED
Locator
Button/LED
Color
Green
System normal; OS up and running.
Green
OS booting or at BCH.
Yellow
Warning—System needs attention.
Redundancy lost, component failure
pending.
Red
Hard fault. System halted.
N/A
System off.
Green
Power normal.
Yellow
Housekeeping voltage present.
Off
Power off.
Green
Disk activity.
Green
Thermal OK.
Yellow
Thermal warning.
Blue
System locator LED can be remotely
or locally activated and deactivated.
Installing the System
Installing Additional Components
Description
25