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

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 off.

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 (on solid or blinking) LED indicates the failing power supply.
   Figure 1. FRU fault and identify LED

   
5. If the system is running, stop the system as described in Stopping the system or logical partition.
6. At the front of the expansion unit, slide the cable retention bracket for the power supply that you want to remove to the open position (A), and then disconnect the cable (B) as shown in Figure 2.
   Figure 2. Disconnecting the power cable from the front of an expansion unit

   
7. 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.
8. 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

   
9. 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 on the front of the Offline Converter Assembly (OCA) (B), shown in Figure 4, is on solid.

   Figure 4. 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 power supply fan

      
   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.