Dell XPS 17 9720 Service Manual - Page 40

Installing the system board, Steps, Prerequisites

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Steps 1. Remove the two (M2x4) screws that secure the display-cable bracket to the system board. 2. Lift the display-cable bracket off the system board. 3. Disconnect the camera connector and the display connector from the system board. 4. Remove the two (M2x4) screws from the left USB Type-C port bracket and lift it off the system. 5. Open the latch and disconnect the power-button cable from the system board. 6. Disconnect the left speaker cable from the system board. 7. Disconnect the keyboard cable from the system board. 8. Remove the two (M2x4) screws from the right USB Type-C port bracket and lift it off the system. 9. Remove the single (M2x4) screw from the wireless antenna bracket and lift it off the system. 10. Disconnect the antenna cables from the wireless module on the system board. 11. Disconnect the right speaker cable from the system board. 12. Remove the three screws (M2x4) that secure the system board to the palm-rest and keyboard assembly. 13. Lift the system board off the palm-rest and keyboard assembly. Installing the system board Prerequisites NOTE: The Service Tag of your computer is stored in the system board. Enter the Service Tag in the BIOS setup program after you replace the system board. 40 Removing and installing components

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Steps
1.
Remove the two (M2x4) screws that secure the display-cable bracket to the system board.
2.
Lift the display-cable bracket off the system board.
3.
Disconnect the camera connector and the display connector from the system board.
4.
Remove the two (M2x4) screws from the left USB Type-C port bracket and lift it off the system.
5.
Open the latch and disconnect the power-button cable from the system board.
6.
Disconnect the left speaker cable from the system board.
7.
Disconnect the keyboard cable from the system board.
8.
Remove the two (M2x4) screws from the right USB Type-C port bracket and lift it off the system.
9.
Remove the single (M2x4) screw from the wireless antenna bracket and lift it off the system.
10.
Disconnect the antenna cables from the wireless module on the system board.
11.
Disconnect the right speaker cable from the system board.
12.
Remove the three screws (M2x4) that secure the system board to the palm-rest and keyboard assembly.
13.
Lift the system board off the palm-rest and keyboard assembly.
Installing the system board
Prerequisites
NOTE:
The Service Tag of your computer is stored in the system board. Enter the Service Tag in the BIOS setup program
after you replace the system board.
40
Removing and installing components