Dell Inspiron 14 3420 Service Manual page 22

Steps
1. Peel the tape that secures the display cable to the system.
2. Open the latch and disconnect the display cable from its connector on the system board.
3. Remove the display cable from the routing guide on the palm-rest and keyboard assembly.
4. Remove the two (M2.5x5) screws that secure the left-display hinge to the palm-rest and keyboard assembly.
22 Removing and installing components