Removing a microprocessor and heat sink

Use this information to remove a microprocessor and heat sink.

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

Read Safety and Installation guidelines.
If the compute node is installed in a NeXtScale n1200 Enclosure, remove it (see Removing a compute node from a chassis for instructions).
Carefully lay the compute node on a flat, static-protective surface, orienting the compute node with the bezel pointing toward you.

Microprocessors are to be removed only by trained technicians.
Important
Always use the microprocessor installation tool to remove a microprocessor. Failing to use the microprocessor installation tool may damage the microprocessor sockets on the system board. Any damage to the microprocessor sockets may require replacing the system board.
Be extremely careful, the microprocessor socket contacts are very fragile. Do not touch the microprocessor socket contacts. Contaminants on the microprocessor contacts or microprocessor socket contacts, such as oil from your skin, can cause connection failures between the contacts and the socket.
Do not allow the thermal grease on the microprocessor and heat sink to come in contact with anything. Contact with any surface can contaminate the thermal grease and the microprocessor socket.
Do not use any tools or sharp objects to lift the locking levers on the microprocessor socket. Doing so might result in permanent damage to the system board.
Each microprocessor socket must always contain either a socket cover or a microprocessor and heat sink.
Be sure to use only the installation tools provided with the new microprocessor to remove or install the microprocessor. Do not use any other tool.
When installing multiple microprocessors, open one microprocessor socket at a time to avoid damaging other microprocessor socket contacts.
The microprocessor installation tool has the microprocessor installed on the tool, and may have a protective cover over the microprocessor. Do not use the tool, or remove the cover until you are instructed to do so.

Note

The installation tool has two settings for installing two different sizes of microprocessors. The settings that are marked on tool are L for smaller low core microprocessors, and H for larger high core microprocessors. Installation tool supports the following families of microprocessors: E5-26xx, E5-46xx, E5-26xx v2, E5-46xx v2.

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

Remove the cover (see Removing the compute node cover).
Remove the air baffle (see Removing the air baffle).
Locate the microprocessor to be removed (see System-board internal connectors).
Remove the heat sink.
Attention
Do not touch the thermal material on the bottom of the heat sink. Touching the thermal material will contaminate it. If the thermal material on the microprocessor or heat sink becomes contaminated, you must wipe off the contaminated thermal material on the microprocessor or heat sink with the alcohol wipes and reapply clean thermal grease to the heat sink.
1. Loosen the four screws on the corners of the microprocessor retainer.
2. Lift the heat sink out of the server. After removal, place the heat sink (with the thermal grease side up) on a clean, flat surface.
  Figure 1. Heat sink removal
Open the microprocessor socket release levers and retainer.
Figure 2. 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 microprocessor contacts. Contaminants on the microprocessor contacts, such as oil from your skin, can cause connection failures between the contacts and the socket.
Remove the microprocessor from the socket.
1. Select the empty installation tool and ensure that the handle is in the open position. If the installation tool handle is not in the open position, 1 lift the interlock latch and hold it up while you2 twist the microprocessor installation tool handle counterclockwise to the open position, and then release the interlock latch. The following illustration of the installation tool shows the location of the interlock latch and counterclockwise rotation of the handle before loading the microprocessor.
  Figure 3. Installation tool handle adjustment
2. Align the installation tool with the screws, as shown in the following graphic, and lower the installation tool on the microprocessor. The installation tool rests flush on the socket only when it is aligned correctly.
  Figure 4. Microprocessor installation
3. Gently twist the handle of the installation tool clockwise until it locks in the H or L position, depending on the size of microprocessor, and then lift the microprocessor out of the socket.
  Figure 5. Installation tool handle adjustment
4. Lift the microprocessor out of the socket.
  Figure 6. Installation tool removal
Install the new microprocessor (see Replacing a microprocessor and heat sink).
Attention
If you are replacing a microprocessor, use the empty installation tool that comes with the new microprocessor to remove the microprocessor.
If you do not intend to install a microprocessor on the socket, install the socket cover that you removed in step 6 on the microprocessor socket.
Attention
The pins on the socket are fragile. Any damage to the pins may require replacing the system board.

If you are instructed to return the microprocessor, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

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