IBM 7383 Installation And Service Manual page 358

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System x3500 M4 Type 7383: Installation and Service Guide
Note: Make sure that none of the server cables are caught under the system
board.
3. Slightly pull up the release pin and slide the system board toward the rear of
the server.
Note: Make sure that none of the server cables are caught under the system
board.
4. Install any of the following components that you removed from the system
board: