Step 1.  Align the system board air baffle with the two pairs of guides on the sides, and lower it into the 
server.  
Attention: Air baffle is required for airflow that creates proper cooling. Make sure to install proper 
air baffles for system configuration before the power is turned on.
Figure 119. Installing the system board air baffle
After this task is completed
Proceed to complete the parts replacement (see “Complete the parts replacement” on page 218).
System board replacement (trained technician only)
Follow instructions in this section to remove or install the system board.
About this task
Note: This task must be operated by trained technicians.
Remove the system board
Follow instructions in this section to remove the system board.
Attention: 
•  Removing and installing this component requires trained technicians. Do not attempt to remove or install 
it without proper training.
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ThinkSystem SR850 V2 Maintenance Manual