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Remove the system I/O board

Follow the instructions to remove 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.

  • When removing the memory modules, label the slot number on each memory module, remove all the memory modules from the system board assembly, and set them aside on a static-protective surface for reinstallation.

  • When disconnecting cables, make a list of each cable and record the connectors the cable is connected to, and use the record as a cabling checklist after installing the new system board assembly.

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.

Procedure

  1. Make preparation for the task.
    1. Backup the UEFI settings and XCC settings. See OneCLI commands that save configuration settings and Using XCC to back up the BMC configuration.
    2. Backup the FoD key if any.
    3. Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.
    4. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top covers, or remove the server from the rack. See Server replacement.
    5. Gently pull and disengage every installed power supply unit. See Remove a power supply unit
    6. Remove the OCP modules if necessary. See Remove an OCP module.
    7. Remove the front top cover. See Remove the front top cover.
    8. Remove the rear top cover. See Remove the rear top cover.
    9. Remove the crossbar. See Remove the crossbar.
    10. Remove the PCIe risers. See Remove the PCIe riser.
    11. Remove the front air baffle. See Remove the front air baffle.
    12. Remove the rear air baffle. See Remove the rear air baffle.
    13. Remove the fans and the fan cage. See Remove a fan and Remove the fan cage.
    14. Remove the intrusion switch. See Remove the intrusion switch.
    15. Remove the power distribution board. See Remove the power distribution board.
    16. Remove the PHMs. See Remove a processor and heat sink. If you need to remove the Processor Neptune® Core Module, see Remove the Lenovo Processor Neptune Core Module.
    17. Remove the USB I/O board. See Remove a memory module.
    18. Remove all the memory modules from the system board assembly, and set them aside on a static-protective surface for reinstallation. See Remove a memory module.
      Important
      It is advised to print out the layout of memory module slots for reference.
    19. Remove the MicroSD card, see Remove the MicroSD card.
    20. Disconnect all the cables from the system board assembly. As you disconnect the cables, make a list of each cable and record the connectors the cables are connected to, and use the record as a cabling checklist after installing the new system board assembly.
      Attention
      To avoid damaging the system board assembly, make sure to follow the instructions in Internal cable routing when disconnecting cables from the system board assembly.
  2. Remove the system board assembly.
    Note
    The lifting handle only serves the purpose of removing system board assembly. Do not attempt to lift the whole server with it.
    Figure 1. System board assembly removal
    System board assembly removal
    1. Pull up the rear plunger to release the system board assembly.
    2. Grasp the front lifting handle and the rear plunger; then, slide the system board assembly toward the front of the chassis to disengage it from the chassis.
    3. Rotate the longer side of the system board assembly up; then, lift the system board assembly out of the chassis.
  3. Separate the system I/O board from the processor board.
    Note
    To prevent the contact of the I/O board from damage, pinch the handle on the I/O board and pull out the I/O board outward. During the entire pulling action, ensure that the I/O board remains as horizontal as possible.
    Figure 2. System I/O board removal
    System I/O board removal
    1. Remove the screws that secure the system I/O board.
    2. Pinch the handle on the I/O board and pull the I/O board outward to disengage it from the processor board.

After you finish

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.