Removing a power supply or fan from a 5802 or 5877 expansion unit with power on

Learn how to remove a power supply or power-supply fan from a 5802 or 5877 expansion unit if you need to replace a failing part with the power on.

If your system is managed by the Hardware Management Console (HMC), you can use the HMC to complete the steps for removing a power supply. For instructions, see Removing a part using the Hardware Management Console.

Attention: Two power supplies must be present in the expansion unit. If one power supply fails, the expansion unit will continue to operate. You can remove and replace the power supply with the expansion unit on if it is done in less than 2 minutes. To avoid overheating, if the power supply cannot be replaced within 2 minutes, remove the power supply with the expansion unit power off.

To remove a power supply or fan from an expansion unit for a system that is not managed by the HMC while the system power is on, complete the following steps:

  1. Complete the prerequisite tasks described in Before you begin.
  2. Open the front rack door.
  3. Identify the power supply that needs to be replaced, as described in Identifying a failing part.
  4. At the front of the expansion unit, identify the power supply that needs to be replaced. To identify the power supply, observe the state of the amber field-replaceable unit (FRU) fault and identify light-emitting diode (LED) (A) as shown in Figure 1. A lit (blinking or on solid) LED indicates the failing power supply.
    Figure 1. FRU fault and identify LED
    Graphic showing the location of the FRU fault and identify LED
  5. For the power supply that you want to remove, slide the cable retention bracket to the open position (A), and then disconnect the power cable (B) as shown in Figure 2. By moving the bracket to the open position, you turn the power supply off.
    Figure 2. Disconnecting the power cable from the front of an expansion unit
    Graphic showing the disconnection of a power cable from the front of 5802 and 5877 expansion units
  6. Attach the wrist strap.
    Attention:
    • Attach a wrist strap to an unpainted metal surface of your hardware to prevent electrostatic discharge (ESD) from damaging your hardware.
    • When using a wrist strap, follow all electrical safety procedures. A wrist strap is for static control. It does not increase or decrease your risk of receiving electric shock when using or working on electrical equipment.
    • If you do not have a wrist strap, just prior to removing the product from ESD packaging and installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of 5 seconds.
  7. Rotate the power-supply locking handle (A) to the open position as shown in Figure 3, and then pull the power supply out of the expansion unit.
    Figure 3. Removing a power supply
    Graphic showing removal of a power supply from the 5802 and 5877 expansion units
  8. Optional: If you need to remove a failing power-supply fan, complete the following steps:
    Note: If a fan fails, the amber fan fault LED (B) on the front of the Offline Converter Assembly (OCA), as shown in Figure 4, is on solid.
    Figure 4. Fan fault LED and fan identify button
    Graphic showing the OCA fan fault LED and fan identify button
    1. Identify the failing fan by pressing the fan identify button (A) shown in Figure 4. An amber left or right fan-fault LED (C) on solid, as shown in Figure 5, indicates the faulty fan.
      Figure 5. Removing a fan
      Graphic showing fan removal in the 5802 and 5877 expansion units power-supply assemblies
    2. Loosen the thumbscrew (A) that holds the fan in the power-supply assembly, as shown in Figure 5.
    3. Use the recessed fan handle (B) to pull the fan out of the power-supply assembly, as shown in Figure 5.

If you removed the power supply or fan as part of another service action, or if you need to replace the power supply or fan that you removed from an expansion unit, see Replacing a power supply or fan in a 5802 or 5877 expansion unit with power on.