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Removing a microprocessor and heat sink

This information provides instructions on how to remove a microprocessor and heat sink.

Attention
  • Be extremely careful, the microprocessor socket contacts are very fragile.
  • Do not allow the thermal grease on the microprocessor and heat sink to come in contact with anything. Contact with any surface can compromise the thermal grease and the microprocessor socket.
  • 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.
  • Use the microprocessor installation tool that came with the new microprocessor to remove and install the microprocessor.
  • Be sure to only install microprocessors that have the same speed, number of cores, and frequency.
  • Each microprocessor socket must always contain either a socket cover or a microprocessor and heat sink.
  • Be sure to use only the microprocessor installation tool provided with the new microprocessor to remove or install the microprocessor. Do not use other tools.
  • The microprocessor installation tool has the microprocessor installed on the tool, and might have a protective cover over the microprocessor. Do not use the tool or remove the cover from the microprocessor until you are instructed to do so.

To remove a microprocessor and heat sink, complete the following steps:

  1. Before you begin, read Safety and Installation guidelines .
  2. Turn off the server (see Turning off the server) and all attached peripheral devices. Disconnect all power cords; then, disconnect all external cables as necessary to replace the device.
  3. Remove the compute book from the server.
  4. Remove the compute book cover (see Removing the compute book cover).
  5. Remove the heat sinks:
    1. Use a screwdriver to loosen the captive screw on one side of the heat sink to break the seal with the microprocessor.
    2. Loosen all the captive screws on the heat sink, rotating each screw one full turn until each screw is loose.

      Illustration of removing the heat sink
    3. Gently lift the heat sink from the microprocessor.
  6. After removal, place the heat sink on its side on a clean, flat surface.
  7. Open the microprocessor socket release levers and microprocessor retainer.
    Attention: Do not use any tools or sharp objects to lift the release levers on the microprocessor socket. Doing so might result in permanent damage to the board.
    1. Locate the two release levers on the microprocessor socket.
    2. Press the release lever on the right down and inward toward the socket and lift it up to the fully open position; then, press the release lever on the left down and inward toward the socket and it opens up to the fully open position.
    3. Open the microprocessor retainer by lifting up on the retainer tab.

      Attention: Do not touch the contacts on the microprocessor and the microprocessor socket.


      Illustration of opening the microprocessor socket release lever
  8. Locate the microprocessor installation tools that comes with the new microprocessor kit. Use the empty tool to remove the failed microprocessor.
    Note
    The microprocessor FRU comes with two microprocessor installation tools: one tool is empty and one tool comes with a microprocessor and a cover on the bottom of the tool.
  9. Remove the microprocessor from the socket:
    1. Use the empty installation tool and ensure that the handle is in the open position. If the tool handle is not in the open position, twist the handle on the microprocessor installation tool counterclockwise so that it is in the open position.

      Illustration of the installation tool in the open position
    2. Align the holes on the installation tool with the screws on the microprocessor bracket, then lower the microprocessor installation tool down over the microprocessor. The installation tool rests flush on the socket only if it is aligned correctly.

      Illustration of removing the microprocessor
    3. Gently twist the handle on the installation tool clockwise to the closed position and lift the microprocessor out of the socket.
  10. Place the microprocessor on a static-protective surface. Remove the microprocessor from the installation tool by twisting the handle counterclockwise.

    Illustration of releasing the microprocessor from the tool
  11. If you are instructed to return the microprocessor, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you. Do not return the microprocessor installation tool.