Lenovo ThinkServer TD100 Hardware Maintenance Manual page 152

6. While you support the power-supply, remove the three screws from the pivot
7. If you are instructed to return the power supply, follow all packaging instructions,
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ThinkServer TD100 and TD100x: Hardware Maintenance Manual
bracket that secure the power supply to the chassis; then, lift the power supply
off the chassis. Save the screws to use when you install the replacement power
supply.
Power supply
retaining screws
Power supply
assembly
and use any packaging materials for shipping that are supplied to you.