Swapping out a power supply

Swapping out a power supply involves turning off, disconnecting, and removing the old power supply and installing, connecting, and turning on the replacement power supply.

Before you begin

All other components in the system must be functioning properly; if not, you must contact technical support.

About this task


  1. Identify the power supply you want to replace, based on console error messages or through the LEDs on the power supplies.
  2. If you are not already grounded, properly ground yourself.
  3. Turn off the power supply and disconnect the power cables:
    1. Turn off the power switch on the power supply.
    2. Open the power cord retainer, and then unplug the power cord from the power supply.
    3. Unplug the power cord from the power source.
  4. Press and hold the orange button on the power supply handle, and then pull the power supply out of the chassis.
    When removing a power supply, always use two hands to support its weight.

    Locking button
  5. Make sure that the on/off switch of the new power supply is in the Off position.
  6. Using both hands, support and align the edges of the power supply with the opening in the system chassis, and then gently push the power supply into the chassis until it locks into place.
    The power supplies are keyed and can only be installed one way.
    Attention: Do not use excessive force when sliding the power supply into the system; you can damage the connector.
  7. Reconnect the power supply cabling:
    1. Reconnect the power cord to the power supply and the power source.
    2. Secure the power cord to the power supply using the power cord retainer.
  8. Turn on the power to the new power supply, and then verify the operation of the power supply activity LEDs.
    The green power LED lights when the PSU is fully-inserted into the chassis and the amber attention LED flashes initially, but turns off after a few moments.