Replacing the 8202-E4B or 8205-E6B memory voltage regulator module

Use this procedure to replace a memory voltage regulator module.

1. Identify the system that you will be working on by using the identify the system process to turn on the system locate (blue) indicator. For more information, see Control panel LEDs.
2. Complete the prerequisite tasks. For instructions, see Before you begin.
3. Stop the system. For instructions, see Stopping a system or logical partition.
4. For a rack-mounted system, place the system into the service position. For instructions, see Placing a rack-mounted model into the service position.
5. Remove the service access cover:
   • For a rack-mounted system, see Removing the service access cover from a rack-mounted model.
   • For a stand-alone system, see Removing the service access cover from a stand-alone model.
6. Use the service indicator light-emitting diodes (LEDs) to help identify the part. For instructions, see Identifying a part.
7. Disconnect the power source from the system by unplugging the system. For instructions, see Disconnecting the power cords.
   Note: This system might be equipped with a second power supply. Before continuing with this procedure, ensure that the power source to the system has been completely disconnected.

   (L003)

   
   or
   

8. 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.
9. Remove the memory riser from the system:
   1. Pull the locking tabs (A) into the open position.
   2. Lift the memory riser out of the system.
   Figure 1. Removing a memory module riser

   
10. Remove the existing voltage regulator module from the system processor assembly. For more information, see Removing the memory voltage regulator module.
11. Remove the new voltage regulator module from its antistatic package. Locate the connectors on the system processor assembly to connect the module.
12. Install the voltage regulator module by completing the following steps:
    1. Carefully grasp the voltage regulator module along two edges (A) and align it with the connectors.
    2. Insert the voltage regulator module (B) into the connectors and firmly push down into position.
       Figure 2. Installing the memory voltage regulator module

       
13. Replace the memory riser.
    1. Align the memory riser with the connector.
    2. Press firmly into the connector.
    3. Press the locking tabs (A) into the closed position.
       Figure 3. Replacing a memory module riser

       
14. Replace the service access cover:
    • For a rack-mounted system, see Installing the service access cover on a rack-mounted model.
    • For a stand-alone system, see Installing the service access cover on a stand-alone model.
15. Reconnect all power and signal cables to their respective connectors.
16. Close the rear rack door or the rear system door.
17. Start the system. For instructions, see Starting the system or logical partition.
18. Verify the installed part:
    • If you replaced the part because of a failure, verify the installed part as described in Verifying a repair.
    • If you installed the part for any other reason, verify the installed part as described in Verifying the installed part.