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System board assembly replacement (trained technicians only)

Follow instructions in this section to remove and install the 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 Liquid to Air Module (L2AM) installed, you must apply for a L2AM module handle (L2AM 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 (L2AM heat sink bracket) as the new L2AM package contains it.

Hazardous moving parts. Keep fingers and other body parts away.
This label indicates hazardous moving parts nearby and warns users and servicers to keep fingers and other body parts away.

Attention/Caution/Danger icon, warning users and servicers of a hot surface nearby
The heat sinks and processors might be very hot. Turn off the server and wait several minutes to let the server cool before removing the server cover.
The following illustration shows the layout of the system board assembly which contains the Firmware and RoT security module, system I/O board, and processor board.
Figure 1. System-board-assembly layout

1 Firmware and RoT Security Module2 System I/O board3 Processor board