Fujitsu SPARC ENTERPRISE M8000 Manual de usuario Pagina 391

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Chapter 21 Sensor Unit Replacement 21-5
The procedure is as follows.
1. Unlock and open a door of the server.
For details, see Chapter 5.
2. Change the mode switch setting on the operator panel from Locked to Service.
Note When the maintenance work is completed, be sure to confirm the mode
switch setting and return the switch to Locked.
3. Stop (turn off power) all domains together. Take either of the following two
actions:
Press and hold the POWER switch on the operator panel for at least four
seconds.
From a console that is connected to XSCF, log in to XSCF, and execute the
poweroff -a command.
The OS shutdown processing is executed for all the domains, and then the
power-off processing is executed.
4. Confirm that the power-off processing is completed by confirming that the
POWER LED (green) on the operator panel is off.
5. Switch off all main line switches for the AC section (ACS) in the power supply
system.
For details, see Section 4.5.3, “Main Line Switch Locations” on page 4-28.
Note If the optional three-phase 200 VAC input power supply unit is installed, the
main line switches are located on the three-phase ACS.
Caution If the dual power feed option is installed, switch off the main line
switches for both power supply units.
Caution After stopping all the domains, be sure to switch off the main line
switches in the power supply system to completely shut off the supply of power.
6. Connect the wrist strap clip to a cabinet grounding port, and attach the band of
the wrist strap to one of your wrists.
7. Remove the SNSU to be replaced. (See
FIGURE 21-4 or FIGURE 21-5)
a. Using a Phillips screwdriver, loosen the two thumb screws in the SNSU.
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