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Cabling and powering up the system 61
7. Be sure that the hot-plug power supply LEDs, power enclosure DC power
LEDs, and bus bar power LEDs are illuminated green. Refer to the "LEDs,
buttons, and switches (on page 63
)" or to the documentation included with
the HP BladeSystem p-Class 3U Power Enclosure.
8. Unlock the circuit breaker switches on the bus bars or power bus boxes and
toggle the switches to the on position. This action applies DC power to the
server blade enclosures.
IMPORTANT: Only unlock circuit breakers for couplers that are
attached to a server blade enclosure.
9. Be sure that the server blade enclosure DC power LEDs are illuminated
green. Refer to "LEDs, buttons, and switches (on page 63
)" or to the
documentation included with the HP BladeSystem p-Class Server Blade
Enclosure.
NOTE: Circuit breakers continue to function in the event of an overload
condition even if they are locked.
IMPORTANT: Be sure to lock all the circuit breaker switches in the on
position. This action prevents anyone from accidentally powering down
the system.
Power is now applied to all system hardware.
Powering up the system (facility DC)
If you are using a facility DC power source:
1. Connect the power cables to the DC power source.
2. Apply power to the facility power connection, if necessary.
IMPORTANT: Only unlock circuit breakers for couplers that are
attached to a server blade enclosure.
3. Unlock the circuit breaker switches on the bus bars or power bus boxes and
toggle the switches to the on position. This action applies DC power to the
server blade enclosures.
IMPORTANT: Be sure to lock all the circuit breaker switches in the on
position. This action prevents anyone from accidentally powering down
the system.
NOTE: Circuit breakers continue to function in the event of an overload
condition even if they are locked.