Dell OptiPlex 3020–Mini Tower Owner's Manual

Removing the Power Supply

  1. Follow the procedures in Before Working Inside Your Computer .
  2. Remove the cover.
  3. Perform the following steps as shown in the illustration:
    1. Press the 4–pin power cable [1].
    2. Disconnect the 4-pin power cables from the system board [2].
    3. Press the 8–pin power cable [3].
    4. Disconnect the 8-pin power cables from the system board [4].
    5. Unroute cables from the system board [5].
    Figure displaying how to disconnect the 4–pin and 8–pin power cables from the system board.
  4. Remove the screws that secure the power supply to the back of the computer. Figure displaying how to remove the screws that secure the power supply unit to the computer.
  5. Perform the following steps as shown in the illustration:
    1. Push in on the blue release tab beside the power supply [1].
    2. Slide the power supply towards the front of the computer [2].
    3. Lift and remove the power supply out of the computer. [3].
    Figure displaying how to release and remove the power supply unit from the computer.

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