Sun Microsystems Ultra Enterprise 3000, Installation Manual

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Powering the System On and Off 3-3
3
4. Turn the AC power sequencer power switch to On.
See Figure 3-2.
5. Turn the key switch to the On position.
See Figure 3-1. You should see and hear several things happen:
Figure 3-1 Key Switch Positions
•
The fans in the power supplies begin turning.
•
The top front panel LED (green) turns on immediately denoting the power
supply is delivering DC power.
•
The middle front panel LED (yellow) flashes while POST runs for
approximately 60 seconds. After 60 seconds, this LED turns off if the tests
pass. If the LED remains lit after 60 seconds, a test has failed.
•
The bottom front panel LED (green) flashes to show that boot is successful
and the operating system is running. If this LED fails to turn on and the
middle LED is on, a severe hardware fault exists.
Standby
Locked
Diagnostics
Legend:
Locked = Normal power ON in secure mode
Diagnostics = Normal power ON with full
diagnostics
On = Normal power ON
Standby = OFF; no DC power
On