Lenovo ThinkSystem SR645 V3 User Manual page 154

Step 2. Remove the system board (system board assembly).
Figure 104. System board (system board assembly) removal
a. Hold the lift handle
(system board assembly) toward the front of the server.
b. Lift the system board (system board assembly) out of the chassis.
Step 3. (Optional) If you are going to replace the system I/O board, remove the firmware and RoT security
module from the system I/O board. See
135. If you are going to replace the processor board, go to next step directly.
Step 4. Separate the system I/O board from the processor board.
Note: To prevent the contact of the system I/O board from damage, pinch and lift the plunger on
the system I/O board upward a little and pull the system I/O board outward. During the entire
pulling action, ensure that the system I/O board remains as horizontal as possible.
Figure 105. Separating the system I/O board from the processor board
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and lift the release pin
1
"Remove the firmware and RoT security module" on page
at the same time and slide the system board
2