Dell Precision Tower 3620 Owner's Manual

Removing the power supply unit PSU

  1. Follow the procedure in Before Working Inside Your Computer .
  2. Remove the cover.
  3. Press the tab of the 4-pin power cables and disconnect it from the system board [1,2].
  4. Release the cables from the clip [3].Figure displaying how to disconnect the 4–pin power cables from the system board.
  5. To remove the power supply unit (PSU):
    1. Remove the screws that secure the PSU to the computer [1].
    2. Disconnect the PSU cables from the connectors on the system board.
    3. Unroute the PSU cables from the retention clips.
    4. Press the metal release tab [2], slide [3] and lift the PSU out of the computer [4].
    Figure displaying how to release and remove the power supply unit from the computer.

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