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XPS 8910 Service Manual

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Power-supply unit Built-in Self Test (BIST)

XPS 8930 supports a new power-supply unit Built-in Self Test (BIST). BIST can now be performed by connecting the power cord to the power-supply unit.

  1. Turn off your computer.
  2. Disconnect the power cord from the power-supply unit, and wait for 15 seconds.
  3. After 15 seconds, connect the power cord to the power-supply unit.
    • If the LED is on for 3 seconds and turns off, it indicates that the power-supply unit is functional. Continue with troubleshooting steps for other devices.
    • If the LED does not turn on, it indicates a hardware failure.
    Image: Power-supply unit

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