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.
• 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. Remove the server cover. See Remove the server cover.
   2. Remove the front bezel. See Remove the front bezel.
   3. If applicable, remove the ODD+bay 2 drive cage assembly (see Remove an optical drive cage) or remove the bay 2+bay 3 drive cage assembly (see Remove the drive cage (bay 3)).
   4. Remove the cage bar. See step 3 in Remove the server cover.
   5. If applicable, remove the rear fan. See Remove the fan (front and rear).
   6. If applicable, remove the M.2 drive. See Remove an M.2 drive.
   7. If applicable, remove the PCIe adapters. See Remove a PCIe adapter.
   8. Remove the memory modules. See Remove a memory module.
   9. Remove the heat sink and fan module. See Remove the heat sink and fan module (trained technician only).
   10. Remove the processor. See Remove the processor (trained technician only).
2. Remove the screw that secures the front I/O bracket to the chassis.
   Figure 1. Removing the screw that secures the front I/O bracket
   
   
3. Remove the front I/O bracket.
   1. Rotate the left end of the front I/O bracket away from the chassis.
   2. Remove the front I/O bracket from the chassis.
      Figure 2. Removing the front I/O bracket from the chassis
      
      
4. Disconnect all the cables connected to the system board.
   Attention

   To avoid damaging the system board, make sure to follow the instructions in Internal cable routing when disconnecting cables from the system board.
5. Remove the nine screws that secure the system board in the sequence shown in the illustration below. Keep the screws for future use.
   Figure 3. System-board screws removal sequence
   
   
6. 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