Remove the system I/O board or processor board

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

About this task

S002

CAUTION

The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

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.

• 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 Remove the server from rails.

Procedure

1. Make preparation for the 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.
   4. Gently pull and disengage every installed power supply unit. See Remove a hot-swap power supply unit.
   5. Remove the OCP module. See Remove the OCP module.
   6. Remove the front top cover. See Remove the front top cover.
   7. Remove the rear top cover. See Remove the rear top cover.
   8. Remove all fan modules. See Remove a fan module.
   9. Remove the fan cage. See Remove the fan cage.
   10. Remove the front air baffle. See Remove the front air baffle.
   11. Remove the crossbar. See Remove the crossbar.
   12. Remove all the PCIe risers. See Remove the PCIe riser.
   13. Remove the rear air baffle. See Remove the rear air baffle.
   14. Remove the power distribution board. See Remove the power distribution board.
   15. Remove the PHMs. See Remove a processor and heat sink.
   16. Remove the memory modules. See Remove a memory module.
   17. Remove the serial port module. See Remove the serial port module.
   18. Remove the management NIC adapter. See Remove the management NIC adapter.
   19. Remove the MicroSD card. See Remove the MicroSD card.
   20. Disconnect all cables connected to the system board assembly. See Internal cable routing.
2. Disengage the system board assembly.
   Figure 1. System board assembly removal

   
   
   

   Note

   This handle only serves the purpose of removing the system board assembly. Do not attempt to lift the whole server with it.
   1. Pull the plunger up to release the system board assembly.
   2. Grasp the plunger and blue handle; then, slide the system board assembly slightly towards the front of the server to disengage it from the chassis.
   3. Rotate the longer side of the system board assembly up; then, remove the system board assembly from the chassis.
3. If you are going to replace the system I/O board, remove the firmware and RoT security module and MicroSD card from the system I/O board. See Remove the firmware and RoT security module and Remove the MicroSD card.
4. Separate the system I/O board from the processor board.
   Note

   To prevent the contact of the system I/O board from damage, pinch and lift the plunger on the system I/O board upward a little and pull out the system I/O board outward. During the entire pulling action, ensure that the system I/O board remains as horizontal as possible.

   Figure 2. Separating the system I/O board from the processor board
   

   

   
   
   1. Remove the four screws that secure the system I/O board.
   2. Lift and hold the plunger; then, slide the system I/O board towards the rear end of the chassis to disengage it from the processor board.