Skip to main content

Remove the system board

Use this information to remove the system board.

About this task

  • Removing and installing this component requires trained technicians. Do no attempt to remove or install it without proper training.

  • Read the following section(s) to ensure that you work safely.
  • Record all system configuration information, such as Lenovo XClarity Controller IP addresses, vital product data, and the machine type, model number, serial number, Universally Unique Identifier, and asset tag of the server.

  • Use the Lenovo XClarity Essentials OneCLI to save the system configuration to external media.

  • Save the system-event log to external media.

  • When replacing the system board, always update the server with the latest firmware or restore the pre-existing firmware. Make sure that you have the latest firmware or a copy of the pre-existing firmware before you proceed.

  • Turn off the server. Disconnect the power cords and all external cables. See Power off the server.

  • If the server is installed in a rack, remove the server from the rack.


  1. Make preparations for this task.
    1. Remove the top cover. See Remove the top cover.
    2. Remove the air baffle. See Remove the air baffle.
    3. Remove the PCIe riser assembly. See Remove the PCIe riser assembly.
    4. Remove the PCIe adapter from PCIe slot 3. See Remove the PCIe adapter (Slot 3).
    5. Disconnect the backplate or the backplane cables from the system board. See Backplane and backplate cable routing.
    6. Disconnect the M.2 boot adapter cables from the system board. See M.2 boot adapter cable routing.
    7. Disconnect the fan cables from the system board. See Fan cable routing.
    8. Disconnect the front operator panel cables from the system board. See Front panel cable routing.
    9. Remove the memory modules. See Remove a memory module.
    10. Remove the heat sink. See Remove the heat sink.
    11. Remove the processor. See Remove the processor.
  2. Remove all eight screws that secure the system board to the chassis.
    Figure 1. System-board screws location
    System-board screws location
    • The order and locations of screws removal:
      1 between the SATA connectors and the system power connector5 the lower right side
      2 near the CMOS battery6 the upper left side
      3 near NMI button7 the upper right side
      4 near front USB 3.0 / 2.0 header8 the lower left side
    • For reference, the torque which is required for the screws to be fully tightened or removed is 5.0 +/- 0.5 lb-in.

  3. Slightly lift up the front side of the system board; then, slide the system board towards the front of the server and lift it out of the server.
    Figure 2. System board removal
    System board removal

After you finish

Before you return the system board, make sure that you install the processor socket covers from the new system board. To replace a processor socket cover:
  1. Insert the new system board into the chassis. See Install the system board.

  2. Take a socket cover from the processor socket assembly on the new system board and orient it correctly above the processor socket assembly on the removed system board.

  3. Gently press down the socket cover legs to the processor socket assembly, pressing on the edges to avoid damage to the socket pins. You might hear a click on the socket cover is securely attached.

  4. Make sure that the socket cover is securely attached to the processor socket assembly.

If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

Demo video

Watch the procedure on YouTube