Replacing a microprocessor and heat sink

The following notes describe the type of microprocessor that the server supports and other information that you must consider when you install a microprocessor and heat sink.

1. Read the safety information that begins on Safety and Installation guidelines.
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables.
   Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For details about handling these devices, see Handling static-sensitive devices.
3. Remove the cover (see Removing the compute node cover).
4. Remove the air baffle (see Removing the air baffle).
5. Loosen the four screws on the corners of the microprocessor retainer.
6. Open the microprocessor socket release levers and retainer:
   Figure 1. Microprocessor socket levers and retainer disengagement
   
   
   1. Identify which release lever is labeled as the first release lever to open and open it.
   2. Open the second release lever on the microprocessor socket.
   3. Open the microprocessor retainer.
      Attention: Do not touch the connectors on the microprocessor and the microprocessor socket.
7. Install the microprocessor in the microprocessor socket:
   1. Open the packaging that contains the new microprocessor installation tool assembly and carefully remove the installation tool assembly from the package.
      Note: Do not touch the microprocessor contacts. Contaminants on the microprocessor contacts, such as oil from your skin, can cause connection failures between the contacts and the socket.
   2. Remove the microprocessor protective cover if one is present. The microprocessor is preinstalled on the installation tool.
      Figure 2. Installation tool cover removal
      
      
   3. Align the installation tool with the microprocessor socket. The installation tool rests flush on the socket only if properly aligned.
      Figure 3. Installation tool alignment
      
      
   4. Twist the handle of the installation tool assembly counterclockwise until the microprocessor is inserted into the socket, and lift the installation tool out of the socket. The following illustration shows the tool handle in the open position.
      Figure 4. Installation Tool
      
      

      Figure 5. Installation tool handle adjustment
      
      

      Attention:

      • Do not press the microprocessor into the socket.
      • Make sure that the microprocessor is oriented and aligned correctly in the socket before you try to close the microprocessor retainer.
      • Do not touch the thermal material on the bottom of the heat sink or on top of the microprocessor. Touching the thermal material will contaminate it.
8. Remove the microprocessor socket cover, tape, or label from the surface of the microprocessor socket, if one is present. Store the socket cover in a safe place.
   Figure 6. Socket cover removal
   
   

   Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For details about handling these devices, see Handling static-sensitive devices.
9. Close the microprocessor socket release levers and retainer:
   Figure 7. Microprocessor socket levers and retainer engagement
   
   
   1. Close the microprocessor retainer on the microprocessor socket.
   2. Identify which release lever is labeled as the first release lever to close and close it.
   3. Close the second release lever on the microprocessor socket.
      Attention:

      • If you are installing a new heat sink, do not set down the heat sink after you remove the plastic cover.
      • Do not touch the thermal grease on the bottom of the heat sink. Touching the thermal grease will contaminate it.
10. Install the heat sink.
    Attention:

    • Do not set down the heat sink after you remove the plastic cover.
    • Do not touch the thermal grease on the bottom of the heat sink after you remove the plastic cover. Touching the thermal grease will contaminate it. See Thermal grease for more information.
      Figure 8. Thermal grease
      
      
    1. Remove the plastic protective cover from the bottom of the heat sink.
    2. Position the heat sink over the microprocessor. The heat sink is keyed to assist with proper alignment.
       Figure 9. Heat sink installation
       
       
    3. Align and place the heat sink on top of the microprocessor in the retention bracket, thermal material side down.
    4. Press firmly on the heat sink.
    5. Tighten the four screws on the corners of the microprocessor retainer
11. Reinstall the air baffle (see Replacing the air baffle).
12. Install the cover (see Installing the compute node cover).
13. Slide the server into the rack.
14. Reconnect the power cords and any cables that you removed.
15. Turn on the peripheral devices and the server.