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7-4 SPARC Enterprise M4000/M5000 Servers Service Manual • August 2009
7.1.1 Accessing the Power Supply Unit
● From the XSCF Shell prompt, use the replacefru command to disable the
power supply to be removed.
The replacefru command is menu-driven. replacefru will continue while the
power supply is removed and then it will test the power supply. Refer to “Removing
and Replacing a FRU” on page 4-7 for more information.
7.1.2 Removing the Power Supply Unit
Caution – Use proper ESD grounding techniques when handling components. See
“Safety Precautions” on page 1-1.
1. Confirm the DC_OK LED is not lit.
2. If the DC_OK LED remains lit push a paperclip through the pin-hole to
activate the standby switch.
3. Loosen the captive screw on the power supply unit (
FIGURE 7-3).
4. Pull the handle down perpendicular to the server to unseat the unit.
Note – Support the bottom of the unit with one hand to avoid the rear of the unit
swinging and hitting the system as it is removed.
5. Pull the unit from the server and place it on the ESD mat.
XSCF> replacefru