This video will demonstrate the removal procedure of a Fan for the XPS 15 (L521x).
1. Lift the connector latch and, using the pull-tab, disconnect the optical-drive cablefrom the system board. 2. Peel the optical-drive cable from the fan. 3. Disconnect the fan cable from the system board. 4. Remove the screw that secures the fan to the palm-rest assembly. 5. Lift the fan, along with its cable, away from the palm-rest assembly.