Lenovo 70AL Maintenance Manual page 136

7. Remove the four screws
then push the power supply assembly from the rear until it is released from the metal retaining tab
Then, carefully lift it out of the chassis.
Figure 76. Removing the non-hot-swap power supply assembly
8. Touch the static-protective package that contains the new power supply assembly to any unpainted
surface on the outside of the server. Then, remove the new power supply assembly from the package
and ensure that the new power supply assembly is the correct replacement. See "Features" on page 7
for information about the supported power supply assembly.
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1 at the rear of the chassis that secure the power supply assembly, and
2 .