Steps to confirm that power supply unit is defective
Perform the steps to identify a faulty power supply unit
Disconnect the power cord from the power supply
unit.
CAUTION Ensure that you take adequate safety precautions
before accessing the components on your server.
Disconnect the internal PSU cables from the motherboard and each internal device.
Connect the power cord to the PSU
Press the PSU BIST button.
If the LED turns on and remains on while the BIST button is pressed, 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 power-supply unit
failure. Replace the power supply unit.
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