Replacement procedure
1. Remove the computer cover. See "Computer cover" on page 26.
2. Remove the bottom cover. See "Bottom cover" on page 27.
3. Disconnect the system fan cable, and then remove the system fan.
4. Install the new system fan, and then connect the system fan cable the system board.
5. Reinstall all removed parts.
6. Reconnect the ac power adapter and all disconnected cables to the computer.
Note: If a locking device is available, use it to lock the computer.
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User Guide