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Dell Precision Tower 3420 Owner's Manual

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Removing the system board

  1. Follow the procedure in Before Working Inside Your Computer.
  2. Remove the:
    1. cover
    2. front bezel
    3. hard drive
    4. optical drive
    5. heat sink fan cover
    6. heat sink
    7. system fan
    8. memory module
    9. PCIe SSD
  3. Disconnect the cables from the system board.
    Figure displaying disconnecting the cable from the system.
  4. To remove the system board:
    1. Remove the screws that secure the system board to the computer [1].
    2. Slide the system board toward the front of the computer and lift it from the computer [2].
      Figure displaying removing the system board.

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