Remove the system board

Follow instructions in this section to remove the system board. The procedure must be executed by a trained technician.

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 no 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, 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.

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.
• If the server is in a rack, remove it from the rack. See Remove the server from rack.
• Remove any locking device that secures the server, such as a Kensington lock or a padlock.
• Place the server on its side with the cover up.

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.
   4. Remove the server cover. See Remove the server cover.
   5. Remove the front bezel. See Remove the front bezel.
   6. If applicable, remove the optical drive. See Remove an optical drive.
   7. If applicable, remove the optical drive cage. See Remove an optical drive cage.
   8. Remove the cage bar. See step 3 in Remove the server cover.
   9. Remove the intrusion switch. See Remove the intrusion switch.
   10. If applicable, remove the drive cage (bay 3). See Remove the drive cage (bay 3).
   11. Remove the rear system fan. See Remove the fan (front and rear).
   12. Remove the heat sink and fan module. See Remove the heat sink and fan module (trained technician only).
   13. Remove the M.2 boot adapter. See Remove the M.2 boot adapter.
   14. Remove the PCIe adapters. See Remove a PCIe adapter.
   15. Remove the memory modules. See Remove a memory module.
   16. Remove the processor. See Remove the processor (trained technician only).
   17. Remove the firmware and RoT security module. See Remove the firmware and RoT security module.
2. Remove the front I/O bracket.
   1. Remove the screw the secures the front I/O bracket to the chassis.
      Figure 1. Removing the screw the secures the front I/O bracket to the chassis
      
      
   2. Rotate the left end of the front I/O bracket away from the chassis.
   3. Remove the front I/O bracket from the chassis.
      Figure 2. Removing front I/O bracket from the chassis
      
      
3. Disconnect all the cables connected to the system board.
   Attention

   Disengage all latches, cable clips, release tabs, or locks on cable connectors beforehand. Failing to release them before removing the cables will damage the cable connectors on the system board. Any damage to the cable connectors may require system board replacement.
4. Remove the nine screws that secure the system board in the sequence shown on the illustration below. Keep the screws for future use.
   Figure 3. System-board screws removal sequence
   
   
5. Remove the system board from the chassis.
   1. Slide the system board toward the front of the server to release the serial port connector from the chassis.
   2. Gently grasp the system board by the edges; then, tilt the system board, and remove it from the chassis.
      Figure 4. Removing the system board from the chassis