Installing The System Board (Single-Color Keyboard) - Dell NOT22814 Owner's Manual

NOTE: This step is applicable only for computers that are shipped with a 165 Hz or 240 Hz display.
4. Remove the two (M2x5) screws that secure the Type-C bracket to the system board and lift the bracket off 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 right-fan cable from the system board.
8. Disconnect the speaker cable from the system board.
9. Open the latch and disconnect the touchpad cable from the system board.
10. Open the latch and disconnect the keyboard cable from the system board.
11. Open the latch and disconnect the keyboard-backlight cable from the system board.
12. Disconnect the left-fan cable from the system board.
13. Remove the five screws (M2x5) that secure the system board to the palm-rest and keyboard assembly.
14. Remove the screw (M2x3) that secures the USB board to the palm-rest and keyboard assembly.
15. Remove the screw (M2x3) that secures the ethernet and audio board to the palm-rest and keyboard assembly.
16. Remove the screw (M2x4) that secures the left fan to the palm-rest and keyboard assembly.
17. Lift the system-board assembly off the palm-rest and keyboard assembly.
NOTE: Ensure that you lift the system board from the top left and right sides of the heat sink.
18. Place the system-board assembly on a clean and flat surface.
19. Turn the system-board assembly over and remove the
assembly.

Installing the system board (Single-color keyboard)

NOTE: This procedure is applicable only for computers that are shipped with a single-color keyboard.
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.
About this task
The following image indicates the connectors on your system board.
ethernet and audio board,
Removing and installing Field Replaceable Units (FRUs)
USB board, and fan and heat-sink
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