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Install the system I/O board

Follow the instructions in this section to install the system I/O board, also known as Datacenter Secure Control Module (DC-SCM).

About this task

Important
This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install the part without proper training and qualification.
Attention

  • Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

  • Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.

  • Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.

Firmware and driver download: You might need to update the firmware or driver after replacing a component.

Procedure

  1. Install the system I/O board.
    Figure 1. System I/O board installation
    System I/O board installation
    1. Align the contacts on the system I/O board with the slots on the processor board, and use both hands to push the system I/O board and slightly insert it into the connector.
      Note
      To prevent the contacts of the system I/O board from damage, ensure that the system I/O board is aligned correctly with the connector on the processor board, and remains as horizontal as possible during the insertion.
    2. Install the screws to install the system I/O board to the supporting metal sheet.
  2. Install the system board assembly to the server.
    Figure 2. System board assembly installation
    System board assembly installation
    1. Hold the front lifting handle and the rear plunger on the system board assembly; then, insert the shorter side of the system board assembly into the chassis.
    2. Lower the longer side of the system board assembly down into the chassis.
    3. Slide the system board assembly toward the rear of the chassis until it clicks into place. Make sure that the rear connectors on the new system board assembly are inserted into the corresponding holes in the rear panel.

After you finish

  1. Reinstall the MicroSD card, see Install the MicroSD card.
  2. Reinstall the memory modules. See Install a memory module.

  3. Reinstall the PHMs. See Install a processor and heat sink. If you need to reinstall the Processor Neptune® Core Module, see Install the Lenovo Processor Neptune Core Module.

  4. Reinstall the power distribution board. See Install the power distribution board.
  5. Reinstall the intrusion switch. See Install the intrusion switch.
  6. Reinstall the rear air baffle. See Install the rear air baffle.
  7. Reinstall the PCIe risers. See Install the PCIe riser.

  8. Reinstall the crossbar. See Install the crossbar.

  9. Reinstall the front air baffle. See Install the front air baffle.
  10. Reinstall the fans and the fan cage assembly. See Install a fan and Install the fan cage.
  11. Reconnect all the cables to the system board assembly. See Internal cable routing.

  12. Ensure that all components have been reassembled correctly and that no tools or loose screws are left inside the server.

  13. Reinstall the rear top cover. See Install the rear top cover.
  14. Reinstall the front top cover. See Install the front top cover.
  15. Reinstall the power supply units. See Install a power supply unit.
  16. Reinstall the OCP modules if necessary. See Install an OCP module.

  17. If the sever was installed in a rack, reinstall the server into the rack. See Server replacement.

  18. Reconnect the power cords and any cables that you removed.

  19. Power on the server and any peripheral devices. See Power on the server.

  20. (Lenovo service technicians only) Update the UEFI firmware. See Procedure for replacing System I/O board (DC-SCM) and updating system firmware on V4 system.

  21. Update the XCC/LXPM/FPGA SCM/LXUM firmware. See Update the firmware.

  22. Restore the UEFI settings and XCC settings. See OneCLI commands that restore configuration settings or Using XCC to restore the BMC configuration.

  23. Reinstall the FoD key.

  24. If hiding TPM or updating TPM firmware is needed, see Hide/observe TPM or Update the TPM firmware

  25. Optionally, enable Secure Boot. See Enable UEFI Secure Boot.

Demo video

Watch the procedure on YouTube

  • Hide/observe TPM
    TPM is enabled by default to encrypt data transfer for system operation. Optionally, you can disable TPM using Unified Extensible Firmware Interface (UEFI) or Lenovo XClarity Essentials OneCLI.
  • Update the TPM firmware
    Optionally, you can update the TPM firmware using Lenovo XClarity Essentials OneCLI.
  • Enable UEFI Secure Boot
    Optionally, you can enable UEFI Secure Boot.