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Dell Precision 3430 Small Form Factor Service Manual

PDF

Removing power supply unit or PSU

  1. Follow the procedure in Before working inside your computer.
  2. Remove the:
    1. Side cover

    2. Front bezel

    3. Hard drive and optical drive module

  3. To release the PSU:
    1. Disconnect the CPU power cable from the connector on the system board [1].
    2. Unroute the power cables from the retention clips on the chassis [2,3].
    3. Disconnect the PSU power cable from the connector on the system board [4]. To release the PSU
  4. To remove the PSU:
    1. Remove the 3 screws that secure the PSU to the system [1].
    2. Press the blue release tab [4] at the rear end of the PSU unit, slide the PSU and lift it away from the system [2]. To remove the PSU
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