Remove a processor and heat sink

This task has instructions for removing an assembled processor and heat sink, known as a processor-heat-sink module (PHM). This task requires a Torx T30 driver. This procedure must be executed by a trained technician.

About this task

• S002
  
  

  CAUTION

  The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

Attention

• Read the Installation Guidelines to ensure that you work safely.

• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.

• Each processor socket must always contain a cover or a PHM. When removing or installing a PHM, protect empty processor sockets with a cover.

• Do not touch the processor socket or processor contacts. Processor-socket contacts are very fragile and easily damaged. Contaminants on the processor contacts, such as oil from your skin, can cause connection failures.

• Do not allow the thermal grease on the processor or heat sink to come in contact with anything. Contact with any surface can compromise the thermal grease, rendering it ineffective. Thermal grease can damage components, such as the electrical connectors in the processor socket.

• Remove and install only one PHM at a time. If the system board supports multiple processors, install the PHMs starting with the first processor socket.

  Figure 1. Processor locations on system board
  
  

Note

The heat sink, processor, and processor carrier for your system might be different from those shown in the illustrations.

The following illustration shows the components of the PHM.

Figure 2. PHM components

1 Heat sink	9 Clips to secure processor in carrier
2 Heat sink triangular mark	10 Carrier triangular mark
3 Processor identification label	11 Processor ejector handle
4 Nut and wire bail retainer	12 Processor heat spreader
5 Torx T30 nut	13 Thermal grease
6 Anti-tilt wire bail	14 Processor contacts
7 Processor carrier	15 Processor triangular mark
8 Clips to secure carrier to heat sink

Procedure

1. Make preparations for this task.
   1. Turn off the corresponding compute node on which you are going to perform the task.
   2. Remove the compute node from the enclosure (see Remove a compute node from the enclosure).
   3. Remove the node air baffles from the compute node (see Remove the front air baffle and Remove the middle air baffle).
2. Remove the PHM from the system board.
   Figure 3. PHM removal
   
   
   1. Fully loosen the Torx T30 nuts on the PHM in the removal sequence shown on the heat-sink label.
      Note

      For reference, the torque required to fully loosen or tighten the fasteners is 1.1 newton-meters, 10 inch-pounds.

      Attention

      To prevent damage to components, make sure that you follow the indicated removal sequence.
   2. Rotate the anti-tilt wire bails inward.
   3. Carefully lift the PHM from the processor socket. If the PHM cannot be fully lifted out of the socket, further loosen the Torx T30 nuts and try lifting the PHM again.
      Note

      • Do not touch the contacts on the bottom of the processor.

      • Keep the processor socket clean from any object to prevent possible damages.

3. Based on your configuration, follow the corresponding procedures to remove the T-shaped heat sink that comes with processor 2.
   Figure 4. T-shaped heat sink removal
   
   
   1. Fully loosen the three captive screws and four Torx T30 nuts in the removal sequence shown on the T-shaped heat sink label as illustrated below.
      Note

      For reference, the torque required to fully loosen or tighten the fasteners is 1.1 newton-meters, 10 inch-pounds.

      Attention

      To prevent damage to components, make sure that you follow the indicated removal sequence.

      Removal sequence: 7, 6, 5, 4, 3, 2, 1.

      Figure 5. Torx T30 nuts and screws numbering on T-shaped heat sink label
      
      

      1 2 3 4 Torx T30 nuts

      5 6 7 Captive screws

   2. Rotate the anti-tilt wire bails inward.
   3. Carefully lift the T-shaped heat sink from the processor socket. If it cannot be fully lifted out of the socket, further loosen the Torx T30 nuts and try lifting the T-shaped heat sink again.