Replacing a power supply unit for an expansion enclosure

You can replace either of the two hot-swap redundant power supplies in an enclosure. These redundant power supplies operate in parallel, one continuing to power the canister if the other fails.

Before you begin

Attention:

  • Although many components are hot-swappable, their intended use is only when your system is not active (no I/O operations). If your system is powered on and processing I/O operations, go to the management GUI and follow the fix procedures. Initiating the replacement actions without the assistance of the fix procedures can result in loss of data or loss of access to data.

  • Be careful when you are replacing the hardware components that are located in the back of the system. Do not inadvertently disturb or remove any cables that you are not instructed to remove.

  • Ensure that you are aware of the procedures for handling static-sensitive devices before you replace the power supply.

Procedure

  1. Before you remove and replace parts, you must be aware of all safety issues. First, read the safety precautions in the IBM Systems Safety Notices. These guidelines help you work safely with the system.
  2. Confirm that you know which power supply must be replaced. Go to Procedure: Identifying which enclosure or canister to service.
  3. Disconnect the power cord from the electrical outlet. Release the cable retention clip and disconnect the power cord from the power supply that you are replacing.
  4. On the left side of the power supply, press the orange release tab to the right slightly to release the handle (no more than 6 mm [0.25 in.]) as you rotate the handle downward.
  5. Using the handle, gently slide the power supply out of the enclosure, as shown in Figure 1.
    Figure 1. Removing the power supply unit from the left side of the expansion enclosure
    Removing the power supply unit (left side of enclosure)
  6. Hold the new power supply so that the handle is fully extended.
  7. Slide the power supply into the enclosure until it stops. Rotate the handle upward into the closed position until it clicks.
  8. Hold the new power supply so that the handle is fully extended.
  9. Connect the power cord to the power supply and to a properly grounded electrical outlet.
    Note: After the power cord is connected to the electrical outlet, make sure that the AC and DC power (green) LEDs are lit and the fault (amber) LED is off.