Dell Vostro 14 3430 Owner's Manual page 100

Steps
1. Remove the three screws (M2.5x3.8) that secure the left display hinge to the display panel and back cover.
2. Lift and remove the left display hinge from the display assembly.
3. Remove the three screws (M2.5x3.8) that secure the right display hinge to the display panel and back cover.
4. Lift and remove the right display hinge from the display assembly.
100 Removing and installing Field Replaceable Units (FRUs)