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KunLun 9016 V100R001 User Guide 12

This document describes the appearance, specifications, parameters, and structure of the KunLun 9016, and how to install an OS, replace parts, and install, remove, configure, and troubleshoot the server.
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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

Scenarios

Install a CPU in any of the following scenarios:

  • A CPU has failed.
  • A CPU needs to be replaced with a new model.

Prerequisites

Conditions

  • Only personnel authorized by Huawei and Huawei technical support are allowed to replace a CPU.
  • Do not wear ESD gloves during CPU replacement. The gloves may catch on pins on the CPU socket and damage it.

Data

No data preparation is required for this operation.

Tools

  • Thermal compound
  • ESD wrist strap
  • Packaging materials, for example, an ESD bag

Hardware

Spare CPU

Procedure

Remove the system compute module (SCM).

  1. Power off the physical partition where a CPU is to be installed. For details, see Powering Off the 9016.
  2. Remove the SCM where the CPU is to be installed. For details, see Removing an SCM.
  3. Remove the CPU protection cap according to its appearance. For details, see (appearance 1) or (appearance 2).

    Remove the CPU protection cap (appearance 1).

    An ill-positioned CPU protection cap may damage pins in the CPU socket.

  4. Release the CPU lever near the or label. See step (1) in Figure 6-61.
  5. Release the CPU lever near the or label. See step (2) in Figure 6-61.
  6. Open the CPU socket cover. See step (3) in Figure 6-61.
  7. Lift the CPU protection cap. See step (4) in Figure 6-61.
    Figure 6-61 Removing a CPU protection cap

    Remove the CPU protection cap (appearance 2).

  8. Release the CPU levers. See steps (1) and (2) in Figure 6-62.
  9. Lift the CPU protection cap. See step (3) in Figure 6-62.
    NOTE:

    An ill-positioned CPU protection cap may damage pins in the CPU socket.

    Figure 6-62 Removing a CPU protection cap

    Paste thermal compound.

  10. Take the spare CPU out of its ESD bag.
  11. Check that the CPU surface is clean. Use a tissue to clean off any residual thermal paste.
  12. Determine the area on the heat sink for contacting the CPU, and paste thermal compound in the center of the area.

    Use a syringe to measure the quantity of thermal compound to be pasted on the CPU. Table 6-1 lists the quantity of thermal compound required for different sizes of chips.

    Table 6-1 Quantity of thermal compound required

    Chip Size

    Thermal Compound Quantity

    50 mm x 50 mm (1.97 in. x 1.97 in.)

    0.4 ml

    40 mm x 40 mm (1.57 in. x 1.57 in.)

    0.3 ml

    30 mm x 30 mm (1.18 in. x 1.18 in.)

    0.2 ml

    20 mm x 20 mm (0.79 in. x 0.79 in.)

    0.15 ml

    Six methods for pasting thermal compound are shown in Figure 6-63. Dual-line, five-point, S-shaped, and cross pasting methods are recommended.

    Figure 6-63 Pasting methods

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

    The thermal compound layer is as thick as a piece of common paper. Figure 6-64 shows the pasted thermal compound layer. Ensure that the thermal compound is evenly and fully pasted.

    Figure 6-64 Pasted thermal compound layer

    Install the CPU.

    • Before installing a CPU, ensure that the CPU levers are fully opened to prevent damage to the CPU, CPU socket, or mainboard.
    • When you secure the CPU levers, do not exert excessive force or touch any components on the CPU and pins on the CPU socket.
    • To prevent twisted pins, do not move the CPU horizontally before proper positioning. Lift the CPU until it is out of the socket, and then place it into the socket properly.
  14. Install the CPU into the socket. See step (1) in Figure 6-66.

    Align the triangle mark on the CPU with that on the CPU socket, and ensure that the CPU is properly installed. Figure 6-65 shows an incorrectly installed CPU.

    Figure 6-65 Incorrectly installed CPU

  15. Close the CPU socket cover. See step (2) in Figure 6-66.
  16. Secure the CPU lever near the or label. See step (3) in Figure 6-66.
  17. Secure the CPU lever near the or label. See step (4) in Figure 6-66.
    Figure 6-66 Installing a CPU

    Install a heat sink.

  18. Align the heat sink screws with the fastening studs on the CPU socket, and place the heat sink on the CPU. See step (1) in Figure 6-67.
  19. Close the securing rods near the heat sink. See step (2) in Figure 6-67.
Figure 6-67 Installing a heat sink

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Updated: 2019-05-20

Document ID: EDOC1000111827

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