Remove the system I/O board or processor board

Follow instructions in this section to remove the system I/O board or processor board.

Procedure

1. Make preparation for this task.
   1. 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.
   2. Save the system configuration to an external device with Lenovo XClarity Essentials.
   3. Save the system event log to external media.
2. Remove the following components.
   1. Remove the top cover. See Remove the top cover.
   2. Remove the air baffle. See Remove the air baffle.
   3. Remove the fans and the fan cage. See Remove a fan and Remove the fan cage.
   4. Remove the processors and the heat sinks. See Remove a processor and Remove a heat sink.
   5. Make sure to 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. See Remove a memory module.
      Important

      It is advised to print out the layout of memory module slots for reference.
   6. Remove the intrusion switch. See Remove the intrusion switch.
   7. If applicable, remove the PCIe riser(s). See Remove a PCIe riser.
   8. If applicable, remove the OCP module. See Remove the OCP module.
   9. Remove the power supply units. See Remove a power supply unit.
   10. (SXM5 GPU Model only) Remove the SXM5 GPU power distribution board. See Remove the SXM5 GPU power distribution board.
   11. Remove the power distribution board. See Remove the power distribution board.
3. 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.
4. Disengage the system board assembly.
   1. Pull up the rear lifting handle to release the system board assembly.
   2. Grasp both lifting handles and slide the system board assembly toward the front of the chassis.
      Note

      The two lifting handles only serve the purpose of removing system board assembly. Do not attempt to lift the whole server with them.

      Figure 1. System board assembly disengagement
      
      

      1 Lifting handles

5. Remove the system board assembly.
   1. Tilt the system board assembly so that its rear end is up.
   2. Hold both lifting handles, and lift the system board assembly out of the chassis.
      Figure 2. System board assembly removal
      
      
6. (Optional) If you are going to replace the system I/O board, remove the firmware and RoT security module from the system I/O board. See Remove the firmware and RoT security module. If you are going to replace the processor board, go to next step directly.
7. Remove the system I/O board from the processor board.
   1. Separate the system board assembly from the supporting sheet metal.
      1. Remove the following components from the processor board as illustrated:
         • Use a 8 mm hex socket with a screwdriver to remove the two spacers.
         • Use a Phillips #2 screwdriver to remove the two screws and one cable wall bracket.
         Figure 3. Component removal
         
         
      2. Hold the two lifting handles, and carefully turn the system board assembly over.
         Figure 4. Turning the system board assembly over
         
         
      3. Use a Phillips #1 screwdriver to remove the two screws from the bottom of the supporting sheet metal.
         Figure 5. Screw removal
         
         
      4. Hold the two lifting handles, and carefully turn the system board assembly over.
         Figure 6. Turning the system board assembly over
         
         
      5. Remove the following components from the system board assembly as illustrated:
         • Use a 5 mm hex socket with a screwdriver to remove the two hex nuts.
         • Use a 7 mm hex socket with a screwdriver to remove the five guide pins.
         • Use a Phillips #2 screwdriver to remove the lifting handle.
         • Use a Phillips #1 screwdriver to remove the nine screws.
         Figure 7. Component removal
         
         
      6. Separate the system board assembly from the supporting sheet metal.
         Figure 8. System board assembly disassembly

         
         
         
   2. Grasp the system I/O board by its edges, and carefully pull it out of the processor board.
      Figure 9. System I/O board removal