Installing The System Board - Dell NOT22357 Owner's Manual

Steps
1. Remove the two (M2x5) screws that secure the Type-C bracket to the system board and lift the bracket off the system
board.
2. Peel the tape that secures the display-cable connector latch to the system board.
3. Open the latch and disconnect the display cable from the system board.
4. Disconnect the Dynamic Display Switch (DDS) cable from the system board.
5. Disconnect the power-adapter port cable from the system board.
6. Peel the power-adapter port cable off the system board.
7. Disconnect the speaker cable from the system board.
8. Open the latch and disconnect the touchpad cable from the system board.
9. Open the latch and disconnect the keyboard-controller board cable from the system board.
10. Open the latch and disconnect the left-fan cable cable from the system board.
11. Remove the five screws (M2x5) that secure the system board to the palm-rest and keyboard assembly.
12. Remove the screw (M2x3) that secures the USB board to the palm-rest and keyboard assembly.
13. Remove the screw (M2x3) that secures the ethernet and audio board to the palm-rest and keyboard assembly.
14. Remove the screw (M2x4) that secures the left fan to the palm-rest and keyboard assembly.
15. Lift the system-board assembly from the palm-rest and keyboard assembly. The system-board assembly includes the USB
board, ethernet and audio board, and fan and heat-sink assembly.
NOTE: Ensure that you lift the system board from the top left and right sides of the heat sink.
16. Place the system board on a clean and flat surface.
17. Turn the system-board assembly over and remove the
assembly.

Installing the system board

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup program.
Make the appropriate changes again after you replace the system board.
64 Removing and installing Field Replaceable Units (FRUs)
ethernet and audio board, USB board, and fan and heat-sink