AlphaServer 8400 System
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Three status indicator lights (see Figure 3-12) show the state of the system: (Key On)
DC power supplied, (Run) execution, and (Fault) errors. Table 3–4 describes the
conditions indicated by the lights.
Table 3–4 Control Panel Indicator Lights
Light
Color
State
Meaning
Key On
Green
On
Power is supplied to entire system; the blower is
running.
Off
Power is supplied only to the cabinet control logic
module.
Run
Green
On
System is executing operating programs or certain
power-up tests.
Off
System is in console mode, operating system is not
running, or the system is turned off.
Fault
Yellow
On
Fault on system bus.
Slow
Flash
Power sequencing is in progress or airflow error
is detected.
Fast
Flash
Power system error, airflow error, or keyswitch in
Disable position transition detected.
Off
No faults were found.
