Replacing a failed power supply

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Before you begin

When you replace a failed power supply, do not unplug the power supply unit that is working. This action disrupts service to the appliance.

Procedure

  1. Remove the failed power supply from the power supply bay by pinching the side clip and pulling the failed power supply from the bay, as shown in Figure 2.
    Important:

    During normal operation, each power supply bay must contain either a power supply or a power supply blank for proper cooling.

    Figure 1. Removing the power supply from the back of the appliance
  2. Slide the AC power supply into the bay until the retention latch clicks into place. Make sure that the power supply connects firmly to the power supply connector.
  3. Connect the power cord for the new AC power supply to the power cord connector on the power supply. The AC power supply connectors on the back of the appliance are shown in the following figure:
    Figure 2. Identifying the power cord connectors
  4. Route the power cord through the power supply handle and through any cable clamps on the back of the appliance to prevent the power cord from being accidentally pulled out when you slide the appliance into and out of the rack.
  5. Connect the power cord to a properly grounded electrical outlet.

What to do next

Make sure that the AC power LED and the DC power LED on the AC power supply are illuminated, which indicates that the power supply is operating correctly. The two power LEDs are to the left of the power cord connector.