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4-30 SPARC Enterprise M8000/M9000 Servers Service Manual • October 2012
Power-On
1. Turn on all the main line switches of the expansion cabinet.
If an optional power cabinet is connected, also turn on all the main line switches of the
power cabinet.
2. Turn on all the main line switches of the base cabinet.
If an optional power cabinet is connected, also turn on all the main line switches of the
power cabinet.
Power-Off
1. Turn off all the main line switches of the base cabinet.
If an optional power cabinet is connected, also turn off all the main line switches of the
power cabinet.
2. Turn off all the main line switches of the expansion cabinet.
Note – Before performing any maintenance on the external AC power sources that supply
your system, make sure to turn the appropriate main line switches to the off position.
Note – Please wait at least 30 seconds before turning on the system power that you turned
off, by using the main line switch or the circuit breakers on the distribution panel.
4.5.3 Main Line Switch Locations
This section describes the locations of the main line switch for each type of power supply.
See
FIGURE 4-4 through FIGURE 4-9.
A power cabinet is required when using the dual power feed option. However, in the case of
the M8000 server single-phase and dual power feed, the power cabinet is not required
because the rack-mountable dual power feed option is mounted in the M8000 server cabinet.
See
FIGURE 4-5.
In the case of the M9000 server single-phase and dual power feed, main line switches are
mounted in both the server cabinet and the power cabinet. See
FIGURE 4-8.
In the case of the three-phase dual power feed, the main line switch is located in the power
cabinet. See
FIGURE 4-6 and FIGURE 4-9.