Dell Latitude 5400 Service Manual

Removing the system board

1. Lift the latch and disconnect the following cables from the system board:
   1. Speaker cable [1].
   2. LED board cable [2].
   3. USH FFC [3].
   4. Touchpad FFC [4].
   
2. Remove the single (M2x3) screw that secures the fingerprint support bracket to the system board [1].
3. Lift the fingerprint support bracket away from the computer [2].
4. Disconnect the fingerprint port [3].
   
5. Peel the adhesive tape on the eDP cable that is connected to the system board [1].
6. Remove the two (M2x3) screws that secure the eDP bracket to the system board [2].
7. Remove the eDP bracket away from the computer [3].
8. Lift the eDP cable from the connector on the system board [4].
9. Disconnect the cable from the connector on the system board [5].
   
10. Remove the two (M2x3) screws that secure the system board to the palmrest [1].
11. Lift the system board away from the computer [2].