Replacing the microprocessor: 2145-SV1

You can replace a microprocessor in a SAN Volume Controller 2145-SV1 node.

Before you begin

DANGER

Multiple power cords. The product might be equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords. (L003)

To correctly perform this task, you must have one alcohol wipe and the new heat sink that came with the microprocessor FRU or one thermal grease syringe. If you do not already have these items, order them before you begin to replace the part.

1. Open the socket in preparation for inserting the microprocessor. Press down and in on the release lever ( 1  in Figure 1) as you did to remove the microprocessor. Then, lift the microprocessor-release lever 2 ( 2 ).
   Figure 1. Opening the 2145-SV1 microprocessor bracket frame

   
   •  1  Microprocessor
   •  2  Microprocessor-release lever
   •  3  Microprocessor-bracket frame
2. Lift the hinged microprocessor-bracket frame ( 3 ) into an open position. Remove the microprocessor dust cover, tape, or label from the surface of the microprocessor socket, if one is present. Store the dust cover in a safe place.
   Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity.
3. Touch the static-protective package that contains the new microprocessor to any unpainted metal surface on the node; then, remove the microprocessor from the package.
   1. Do not touch the microprocessor contacts; handle the microprocessor by the edges only. Contaminants on the microprocessor contacts, such as oil from your skin, can cause connection failures between the contacts and the socket.
   2. Handle the microprocessor carefully. Dropping the microprocessor during installation or removal can damage the contacts.
   3. Do not use excessive force when you press the microprocessor into the socket.
   4. Verify that the microprocessor is oriented, aligned, and positioned in the socket before you try to close the lever.
   5. If a plastic protective cover is on the bottom of the microprocessor, carefully remove it.
   6. Carefully align the replacement microprocessor over the microprocessor socket.
      Attention: The microprocessor fits only one way on the socket. You must place a microprocessor straight down on the socket to avoid damaging the pins on the socket. The pins on the socket are fragile. Any damage to the pins might require replacing the system board.
4. After alignment, carefully place the microprocessor onto the socket. Close the microprocessor-bracket frame ( 3 ).
   Tip: Do not force the microprocessor. The microprocessor fits only one way on the socket.
5. Carefully close the microprocessor-release lever ( 2 ) to the closed position to secure the microprocessor in the socket.
6. Carefully close the microprocessor-release lever ( 1 ).
7. Clean the grease from the heat sink and apply new grease on the microprocessor.
   When you are installing the heat sink on the same microprocessor that it was removed from, make sure that the following requirements are met:

   • The thermal grease on the heat sink and microprocessor is not contaminated.
   • Extra thermal grease is not added to the existing thermal grease on the heat sink and microprocessor.

   To replace damaged or contaminated thermal grease on the microprocessor and heat sink, complete the following steps.

   1. If it must be reused, place the heat sink on a clean work surface.
   2. Remove the cleaning pad from its package and unfold it completely.
   3. If the heat sink must be reused, use the cleaning pad to wipe the thermal grease from the bottom.
      Note: Make sure that all of the thermal grease is removed.
   4. Use a clean area of the cleaning pad to wipe the thermal grease from the microprocessor; then, dispose of the cleaning pad after all of the thermal grease is removed.
   5. If you have a new heat sink, use the thermal-grease syringe to paint an X on the top of the microprocessor, as shown in Figure 2.
      Figure 2. Applying thermal grease to the 2145-SV1 microprocessor

      
8. Align the heat sink on top of the microprocessor, as shown in Figure 3. If you are installing a new heat sink, remove the grease cover.
   Figure 3. Installing the heat sink on the 2145-SV1 microprocessor

   
9. Use the retention screws to attach the heat sink.
10. Replace the air baffle, as described in Replacing the air baffle: 2145-SV1.
11. Replace the PCI express riser assemblies, as described in Replacing a PCI express riser-card assembly: 2145-SV1.
12. Replace the top covers. See Replacing the top covers: 2145-SV1.
13. If you removed the node from the rack, replace the node in the rack, as described in Replacing a node in a rack.
14. Turn on the node by reconnecting the power cords.