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Chapter 22 Media Backplane Replacement 22-5
22.2 Cold Replacement
In cold replacement, none of the replacement work is performed with the maintenance menu
from a terminal connected to XSCF.
The procedure is as follows.
1. Unlock and open a door of the server. (See Chapter 5)
Caution – Before touching a FRU or dummy (filler) unit, see Section 1.4, “Antistatic
Precautions” on page 1-9 and be sure to wear the antistatic wrist strap. Failure to do so might
result in serious damage to operating domains.
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. Use one of the following methods to stop (power off) all domains at once.
■ 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.