System board assembly replacement (trained technician only)
Follow instructions in this section to remove and install the system board assembly.
Important
This task must be operated by trained technicians that are certified by Lenovo Service. Do not attempt to remove or install it without proper training and qualification.
- If you need to replace a processor board and a firmware and RoT security module together, do the following:
(Lenovo service technicians only) Check the current PSB fuse policy before replacement. See Service process before replacement at Service process for updating PSB fuse state.
(Lenovo service technicians only) Ensure that the processor fuse status is expected without unexpected XCC event logs after replacement. See Service process after replacing a processor board and a firmware and RoT security module together at Service process for updating PSB fuse state.
CAUTION
Hazardous moving parts. Keep fingers and other body parts away.
CAUTION
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 System I/O board | 2 Firmware and RoT security module | 3 Processor board |
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