Dell Inspiron 15 3521 Service Manual page 16

Steps
1. Remove the six screws (M2x5) that secure the base cover to the palm-rest and keyboard assembly.
2. Loosen the two captive screws that secure the base cover to the palm-rest and keyboard assembly.
3. Using a plastic scribe, pry open the base cover starting from the recesses, which are located in the U-shaped indents at the
top edge of the base cover, near the hinges.
4. Pry open the top side of the base cover and continue working on the left and right sides to open the base cover.
5. Lift and remove the base cover off the palm-rest and keyboard assembly.
6. Use the pull tab to disconnect the battery cable from the connector system board.
16 Removing and installing components