Chapter 12 Power Supply Unit Replacement 12-3
12.1 Accessing a Power Supply Unit
■ Because the power supply unit (PSU) does not belong to any domain, active
replacement and hot replacement use the same procedure. See Section 4.4.1, “FRU
Removal and Replacement (Power supply unit/Fan unit)” on page 4-8.
■ For cold replacement, stop the domain and then power off the server. See
Section 4.5.1, “Powering off the Server” on page 4-12.
Caution – To ensure that you and bystanders are not exposed to harm and to
prevent damage to the system, observe the ESD safety precautions. See Section 1.1,
“ESD Precautions” on page 1-1.
1. From the XSCF Shell prompt, use the replacefru command to disable the
power supply unit to be removed.
The replacefru command is a menu-driven interactive command. The
replacefru continues operating while the power supply unit is removed.
Afterwards, it performs the power supply unit test. For details, see Section 4.4.1,
“FRU Removal and Replacement (Power supply unit/Fan unit)” on page 4-8.
2. Loosen the thumbscrew of the cable management arm that is located on the
right side when you are facing the rear of the server.
3. Pull out the cable management arm while keeping it from coming into contact
with the power supply unit.
12.2 Removing the Power Supply Unit
1. Verify that the CHECK LED of the power supply unit is blinking and the DC
LED is off.
2. Release the lock of the cord clamp (1 in
FIGURE 12-2).
3. Remove the power cord from the power supply unit (2 in
FIGURE 12-2).
XSCF> replacefru
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