Inspiron 14 7420 2-in-1 Service Manual

Removing the system board

About this task

The following image indicates the connectors on your system board.

1. Display cable
2. Keyboard-backlight cable
3. Keyboard cable
4. Touchpad cable
5. Speaker cable
6. M.2 card slot for solid-state drive
7. M.2 card slot for wireless card
8. I/O-board cable
9. Fan cable

The following image indicates the location of the system board and provides a visual representation of the removal procedure.

1. Open the display-cable connector latch, and disconnect the display cable from the system board.
2. Remove the four screws (M2.5x4) that secure the right display hinge to the system board and palm-rest and keyboard assembly.
3. Open the hinge at an angle of 90 degrees.
4. Remove the two screws (M2x4) that secure the USB Type-C bracket to the system board and palm-rest and keyboard assembly.
5. Lift the USB Type-C port bracket off the system board and palm-rest and keyboard assembly.
6. Open the latch, and disconnect the keyboard-backlight cable from the system board.
7. Open the latch, and disconnect the keyboard cable from the system board.
8. Open the latch, and disconnect the touchpad cable from the system board.
9. Peel the tape that secures the I/O-board cable to the system board.
10. Open the latch, and disconnect the I/O-board cable from the system board.
11. Remove the two screws (M2x2) that secures the system board to the palm-rest and keyboard assembly.
12. Lift the system board off the palm-rest and keyboard assembly.