Install a processor-heat-sink module

Processors are in the system boards that are accessed from the front of the server. The processor and heat sink are removed together as part of a processor-heat-sink-module (PHM) assembly. PHM installation requires a Torx T30 driver.

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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.

Note

If you are installing multiple options relating to the system board, the PHM installation should be performed first.

CAUTION

Make sure that all server power cords are disconnected from their power sources before performing this procedure.

Attention

• 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.

• 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.

• 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 electrical connectors in the processor socket. Do not remove the grease cover from a heat sink until you are instructed to do so.

• To ensure the best performance, check the manufacturing date on the new heat sink and make sure it does not exceed 2 years. Otherwise, wipe off the existing thermal grease and apply the new grease onto it for optimal thermal performance.

Note

• PHMs are keyed for the socket where they can be installed and for their orientation in the socket.

• See Lenovo ServerProven website for a list of processors supported for your server. All processors on the system board must have the same speed, number of cores, and frequency.

• Before you install a new PHM or replacement processor, update your system firmware to the latest level. See Update the firmware.

• Installing an additional PHM can change the memory requirements for your system. See Install a memory module for a list of processor-to-memory relationships.

• Optional devices available for your system might have specific processor requirements. See the documentation that comes with the optional device for information.

Before installing a PHM:

Note

The PHM for your system might be different than the PHM shown in the illustrations.

1. Remove the front cover. See Remove the front cover.

2. Remove the compute tray where the system board is installed. See Remove a compute tray.

3. If you are installing a PHM in the lower system board, remove the upper system board or system board filler. See Remove a system board.

Figure 1. Processor locations on system board

Figure 2. Processor layout for multi-processor systems (viewed from front of server)

Complete the following steps to install a PHM.

1. Remove the processor socket cover, if one is installed on the processor socket, by placing your fingers in the half-circles at each end of the cover and lifting it from the system board.
2. Install the processor-heat-sink module on the system board.
   Figure 3. Installing a PHM
   
   
   1. Align the triangular marks and guide pins on the processor socket with the PHM; then, insert the PHM into the processor socket.
      Attention

      To prevent damage to components, make sure that you follow the indicated tightening sequence.
   2. Fully tighten the Torx T30 captive fasteners in the installation sequence shown on the heat-sink label. Tighten the screws until they stop; then, visually inspect to make sure that there is no gap between the screw shoulder beneath the heat sink and the processor socket. (For reference, the torque required for the nuts to fully tighten is 1.4 — 1.6 newton-meters, 12 — 14 inch-pounds).