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System board (system board assembly) replacement (trained technicians only)

Follow instructions in this section to remove and install the system I/O board and processor board, which assembled as a system board (system board assembly).

  • This task must be operated by trained technicians that are certified by Lenovo Service. Do no attempt to remove or install it without proper training and qualification.

  • When the server has a L2AM (The Lenovo Neptune Liquid to Air Module) installed, you must apply for a L2AM module handle (LACM heat sink bracket) first if you need to install or remove the system board assembly or processor. However, while replacing the old L2AM with a new one, you do not need to apply for a module handle (LACM heat sink bracket) as the new L2AM package contains it.

  • If you need to replace a processor board and a firmware and RoT security module together, do the following:
The following illustration shows the layout of the system board (system board assembly) which contains the system I/O board and processor board.
Figure 1. System-board-assembly layout
System-board-assembly layout

1 System I/O board3 Processor board
2 Firmware and RoT security module