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CAUTION:
Never remove the cover on a power supply or any part that has the following label attached.
Hazardous voltage, current, and energy levels are present inside any component that has this label
attached. There are no serviceable parts inside these components. If you suspect a with one of these
parts, contact a service technician.
Read the safety information in "Safety" on page v and "Installation guidelines" on page 33.
If you are replacing a server component in the server, you need to turn off the server and peripheral devices,
and disconnect the power cords and all external cables.
To replace the fixed power supply, complete the following steps.
Step 1.
Place the new power supply into the bay.
Step 2.
Tighten the captive thumbscrew that secures the rear of the power supply to the chassis bottom.
Step 3.
Replace the screw that holds the power supply to the rear of the chassis.
Step 4.
Connect the internal power-supply cable from the power supply to the power connectors on the
system board. See "System-board internal connectors" for the locations of the power connectors
on the system board.
Step 5.
Route the internal power-supply cables, securing them with the retention-clips.
Step 6.
Test the power supply:
184
Lenovo System x3250 M4 Installation and Service Guide
Captive screw
Power supply
Rear screw
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Troubleshooting
