Install a CPU

Installing a CPU is a cold-service operation. You must power off the server before installing the CPU.

1. Review this information and complete these prerequisites in this order, if you have not done so already.

   • Rotate the Drive Cage to the Service Position

   • Remove the Air Duct

2. Unpack the replacement processor and place it pin side down on an antistatic mat.
3. Press the release button on the CPU tool to open the securing clips.

   See CPU Tool.

   
   
4. Turn the tool upside down and lower the CPU into the tool, pin side up.

   The triangle on the side of the tool aligns with pin 1 of the CPU.

   
   
5. Press the hold lever outward to engage the CPU.

   You hear a click, and the release button retracts.

   
   
6. Position the tool over the CPU socket and lower it into place.

   The triangle on the side of the tool aligns with pin 1 of the CPU socket.

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   Caution  -  The tool must be level and flat onto the socket, not offset or angled.

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7. Press the release button on the tool to release the CPU into the socket.

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   Caution  -  Do not attempt to forcibly seat the CPU.

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8. Remove the tool.

   The processor should lie flat in the socket, and be properly aligned.

   
   
9. Lower the pressure frame to the closed position.

   The pressure frame should sit flat over the processor.

   
   
10. Lower the release levers and hook them under the catches of the CPU socket.
    
11. Use the syringe to apply approximately 0.1 ml of thermal compound to the top center of the CPU.

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    Note -  Do not distribute the compound. The spring pressure of the heat sink will evenly distribute the compound.

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12. Carefully align the heat sink screws to the mounting posts.

    The “System Front” label must face the front of the server.

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    Caution  -  Moving the heat sink too much unevenly distributes the thermal compound and can lead to CPU damage.

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13. Tighten the four captive screws of the CPU heat sink.

    Alternate between the screws in an X pattern, turning each one-half revolution, until they are fully seated.

14. Review this information and complete these postrequisites in this order.

    • Install the Air Duct

    • Secure the Drive Cage

15. Return the server to operation.

    See Returning the Server to Operation.

16. Verify the functionality of the CPUs by checking for faults.

    See Locate a Faulty CPU.

Related Information

• Remove a CPU

• CPU Configuration

• Preparing for Service

• Returning the Server to Operation