Step 6.
After removing the safety cover, you can see the upper power supply card and lower power-supply
paddle card.
Step 7.
Make note of where the cables between the upper power supply card and lower power-supply
card are connected; then, disconnect them.
Step 8.
Remove the screws that secure the upper power supply card to the chassis.
Step 9.
Lift the upper power supply card out of the server.
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Lenovo System x3630 M4 Installation and Service Guide
Safety cover
Upper power supply
paddle card
Lower power supply
paddle card