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Atlas 800 Training Server Maintenance and Service Guide (Model 9000,Liquid Cooling) 15
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Mainboard

Mainboard

Removing the Mainboard

  1. Record the firmware (iBMC, BIOS, and CPLD) versions of the mainboard to be replaced.

    • On the iBMC WebUI, choose Information > System Info > Product Info to obtain the information.
    • On the iBMC CLI, run the ipmcget -d version command to obtain the information.

  2. Check the iBMC and BIOS configurations.

    After the mainboard is replaced, the original iBMC or BIOS configuration will be lost. If the current iBMC or BIOS parameters have been adjusted based on service scenarios, ensure that the parameter configuration is the same as that before the mainboard is replaced to ensure that services are not affected after the mainboard is replaced.

  3. (Optional) Export the iBMC and BIOS configuration files.

    For details, see "Configuration Update" in the Atlas 800 Training Server iBMC (V3.01.00.00 or Later) User Guide (Model 9000).

    • iBMC 2.32 and later versions support the import and export of configuration files.
    • The iBMC and BIOS configuration files exported from the iBMC can be directly imported after the mainboard replacement. However, the exported configuration files do not contain password information. You need to manually configure the password for the iBMC user. For details, see "iBMC WebUI > iBMC Settings > Configuration Update" in the Atlas 800 Training Server iBMC (V3.01.00.00 or Later) User Guide (Model 9000).
    • The iBMC and BIOS configuration files exported from the iBMC contain the configuration list. For details, see "Configuration File Description" in the Atlas 800 Training Server iBMC (V3.01.00.00 or Later) User Guide (Model 9000).
    • If the iBMC of the mainboard to be replaced cannot be logged in or the iBMC and BIOS configuration files are not exported before the mainboard is replaced, you need to manually configure the iBMC and BIOS after replacing the mainboard.

  4. Wear an ESD wrist strap. For details, see ESD Protection.
  5. Power off the device. For details, see Powering Off the Server.
  6. Remove the power cables and all signal cables.
  7. Remove the device. For details, see Removing the Device and Guide Rails.
  8. Remove the chassis cover. For details, see Chassis Cover.
  9. Remove the air duct and support beam. For details, see Air Duct and Support Beam.
  10. Remove all cables from the mainboard. For details, see Internal Cabling.
  11. Remove all components from the mainboard, such as the DIMM, battery, and riser modules (PCIe card , SDI card, and PCIe RAID controller card on the riser modules). For details, see Mainboard and Its Components.
  12. Remove the CPU heat sink. For details, see Heat Sink.
  13. Remove the thermal pads from the CPU surfaces.
  14. Lift the CPU tray. See Figure 5-74.

    Figure 5-74 Removing the CPU trays

  15. Remove the PSUs. For details, see PSU.
  16. Remove all FlexIO cards. For details, see FlexIO Cards.
  17. Remove the cable organizers. Remove the cable organizers out of the mounting screws on both sides of the chassis. See Figure 5-75.

    Figure 5-75 Removing cable organizers

  18. Install the cable sorting tool to secure the cables between the mainboard and the NPU board to both sides of the chassis. See Figure 5-76.

    Figure 5-76 Installing the cable sorting tool

  19. Loosen the screws on both sides of the chassis using a Phillips screwdriver. See step (1) in Figure 5-77.

    Figure 5-77 Removing the mainboard and partition board

  20. Pull out the mainboard and partition board by holding the handles and guide rails in the red circle as far as they will go, and lift the mainboard and partition board. See (2) in Figure 5-77.

    • Do not hold any other protruding part on the mainboard to lift it. Otherwise, the components on the mainboard may be damaged.
    • During the removal, avoid colliding with the plastic parts for wind blocking in the chassis.

  21. Loosen the captive screws on the mainboard and gently push it inward. When the staple bolts move to the bigger parts of the cucurbit holes, remove the mainboard from the partition board. See (1) and (2) in Figure 5-78.

    Figure 5-78 Removing the mainboard

  22. Remove the handles and guide rails from the mainboard, and the cable organizers in the middle of the mainboard. See steps (1) and (2) in Figure 5-79.

    Figure 5-79 Removing the mainboard auxiliary components

  23. Place the removed mainboard in an ESD bag.
  24. Remove the cable sorting tool. See Figure 5-80.

    Figure 5-80 Removing the cable sorting tool

Installing the Mainboard

  1. Take a spare mainboard out of its ESD bag.
  2. Install the handles and guide rails on the mainboard, and the cable organizers in the middle of the mainboard. See steps (1) and (2) in Figure 5-81.

    Figure 5-81 Installing the mainboard auxiliary components

  3. Align the cucurbit hole on the partition board with the staple bolt on the mainboard, gently pull the mainboard until the cucurbit hole is fixed to the staple bolt, tighten the captive screws on the mainboard, and install the mainboard on the partition board. See steps (1) and (2) in Figure 5-82.

    Figure 5-82 Installing the mainboard

  4. Use the cable sorting tool to secure the cables between the mainboard and the NPU board. See Figure 5-83.

    Figure 5-83 Installing the cable sorting tool

  5. Hold the handle in the red circle, align the mainboard and partition board with the mounting screws on both sides of the chassis, install the mainboard and partition board downwards, and push them in the arrow direction until they do not move. See (1) in Figure 5-84.

    Figure 5-84 Installing the mainboard and partition board
    • During the installation, avoid colliding with the plastic parts for wind blocking in the chassis.
    • To burn the original SN into the new mainboard after replacement, contact Huawei engineers.

  6. Tighten the screws on both sides of the chassis using a Phillips screwdriver. See step (2) in Figure 5-84.
  7. Remove the cable sorting tool. See Figure 5-85.

    Figure 5-85 Removing the cable sorting tool

  8. Align the mounting screws on both sides of the chassis, and install the cable organizers downwards until they cannot move. See Figure 5-86.

    Figure 5-86 Installing cable organizers

  9. Install the CPU tray downwards. See Figure 5-87.

    Figure 5-87 Installing the CPU trays

  10. Attach the thermal pads to the CPU surfaces.
  11. Install the CPU heat sink. For details, see Heat Sink.
  12. Install all components on the mainboard, such as the DIMM, battery, TPM/TCM, and riser modules (PCIe card, SDI card, and PCIe RAID controller card on the riser modules). For details, see Mainboard and Its Components.
  13. Install the cables to the mainboard. For details, see Internal Cabling.
  14. Install PSUs. For details, see PSU.
  15. Install all FlexIO cards. For details, see FlexIO Cards.
  16. Install the air duct and support beam. For details, see Air Duct and Support Beam.
  17. Install the chassis cover. For details, see Chassis Cover.
  18. Install the device. For details, see Installing the Device and Guide Rails.
  19. Install the power cables and all signal cables.
  20. Power on the device. For details, see Powering On the Server.
  21. (Optional) Burn the original ESN to the new mainboard. For details, see "Modifying Electronic Labels" in the SmartKit Computing User Guide (for Engineers).

    • Only engineers who have the permission to download the ElabelTool plugin package of SmartKit can modify electronic labels. After downloading the package, import it to SmartKit.
    • If the original device SN is not burnt in the new mainboard, the iBMC and OS cannot obtain the ESN. This may affect the running of some services or the monitoring and management on the device.

  22. After the mainboard is replaced, the iBMC and BIOS settings are restored to the default settings of the new mainboard. Configure the iBMC and BIOS based on service requirements.

    • iBMC 2.32 and later versions support the import and export of configuration files.
    • If you have iBMC and BIOS configuration files imported before the replacement of the mainboard, you can import the configuration files after the replacement. However, the exported configuration files do not contain password information. You need to manually configure the password for the iBMC user. For details, see "Configuration Update" in the Atlas 800 Training Server iBMC (V3.01.00.00 or Later) User Guide (Model 9000).
    • The iBMC and BIOS configuration files exported from the iBMC contain the configuration list. For details, see "Configuration File Description" in the Atlas 800 Training Server iBMC (V3.01.00.00 or Later) User Guide (Model 9000).
    • If the iBMC/BIOS configuration files are not imported before you replace the mainboard, manually configure the iBMC and BIOS data after the replacement.

  23. (Optional) Upgrade the mainboard firmware (iBMC, BIOS, and CPLD) to the latest version.

    For details, see the Atlas 800 Training Server Upgrade Guide (Model 9000).

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Updated: 2023-01-07

Document ID: EDOC1100141951

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