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CH222 Compute Node V100R001 User Guide 18

This document describes the appearance, functions, structure, and installation, removal, and configuration methods of the CH222 compute node.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Installing a CPU

Installing a CPU

Install a new CPU to replace the original one.


  • Only personnel authorized by Huawei and Huawei technical support personnel can install CPUs.
  • Do not wear electrostatic discharge (ESD) gloves because they may damage the pins on the CPU socket.

Install a CPU if:

  • A faulty CPU needs to be replaced.
  • A CPU of a newer model needs to be used.

The CH222 supports a maximum of two CPUs. Figure 5-70 shows the CPU installation positions and numbers.

Figure 5-70 CPU installation positions and numbers




Data preparation is not required for this operation.


  • ESD wrist strap.
  • M3 phillips screwdriver.


New CPU.


  1. Take the spare CPU out of its ESD bag.
  2. Before installing CPUs, ensure that CPU sockets do not have bent pins and are free from foreign objects.

    If a CPU socket has bent pins or foreign objects, stop installing the CPU and contact Huawei technical support.

  3. Before installing a CPU or heat sink, use tissue to clean up the oil, remaining thermal compound, or foreign objects on their surfaces.
  4. Determine the area on the CPU for contacting the heat sink, and paste 0.4 ml of thermal compound on the area.


    The thermal compound injector has volume marks.

    You can paste thermal compound using any of the six methods shown in Figure 5-71. Dual-line, five-point, and S-shape, and cross pasting methods are recommended.

    Figure 5-71 Pasting methods

  5. Use a clean card to smear the thermal compound over the entire center of the CPU.

    The thermal compound layer is as thick as a common piece of paper. Figure 5-72 shows the smeared thermal grease layer. Ensure that the thermal compound is evenly and fully painted.

    Figure 5-72 Smeared thermal compound layer

    • To prevent damage to the CPU, CPU socket, or mainboard, ensure that the securing rod on the CPU socket is fully open before you install the CPU in the socket.
    • When you close the securing rod, do not exert excessive force or touch any components and gild pins on the CPU.
    • Do not move the CPU if it is not correctly placed to avoid any twisted pins. Lift the CPU until it is out of the socket, and then place it in the socket properly.

    Hold the CPU horizontally, align it with the CPU socket, and place the CPU vertically downwards into the socket. See step (1) in Figure 5-73.

    Align the triangle mark on the CPU with the triangle mark on the CPU socket to ensure that the CPU is properly installed. Figure 5-74 shows a CPU that is incorrectly placed.

    Figure 5-73 Installing a CPU
    Figure 5-74 Wrong way to place a CPU

  6. Close the cover that secures the CPU. See step (2) in Figure 5-73.
  7. Lower the securing rod near the or label. See step (3) in Figure 5-73.
  8. Lower the securing rod near the or label. See step (4) in Figure 5-73.
  9. Align the screws on the heat sink with the fastening studs on the CPU base, and place the heat sink on the CPU. See step (1) in Figure 5-75.

    Figure 5-75 Installing the heat sink

  10. Use a Phillips screwdriver to tighten one pair of diagonally opposite screws on the heat sink halfway and then tighten the other pair of screws. See step (2) in Figure 5-75.
  11. Verification Method.

    1. Power on the compute node.
    2. In the address bar of Internet Explorer, enter https://IP address of the iMana 200 management network port.
    3. On the iMana 200 login page, enter the user name and password.
      • User Name : Enter the default user name root.
      • Password : Enter the default password Huawei12#$.
    4. Click Log In. The iMana 200 UI appears.
    5. Choose System Information > System Hardware.
    6. Check the CPU information to ensure that the replacement is successful.

Updated: 2019-08-16

Document ID: EDOC1000018075

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