Dell Inspiron 7790 AIO Inspiron 27-7790 Service Manual - Page 48

Installing the system board

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Steps 1. Disconnect the backlit cable from the system board. 2. Disconnect the display cable from the system board. 3. Open the latch and disconnect the power-button board cable from the system board. 4. Disconnect the speaker cable from the system board. 5. Disconnect the media-card reader cable from the system board. 6. Disconnect the microphone-module cable from the system board. 7. Disconnect the fan cable from the system board. 8. Disconnect the touchscreen cable from the system board. 9. Disconnect the camera cable from the system board. 10. Remove the six screws (M3x5) that secure the system board to the display-assembly base. Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. 48 Removing and installing components

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Steps
1.
Disconnect the backlit cable from the system board.
2.
Disconnect the display cable from the system board.
3.
Open the latch and disconnect the power-button board cable from the system board.
4.
Disconnect the speaker cable from the system board.
5.
Disconnect the media-card reader cable from the system board.
6.
Disconnect the microphone-module cable from the system board.
7.
Disconnect the fan cable from the system board.
8.
Disconnect the touchscreen cable from the system board.
9.
Disconnect the camera cable from the system board.
10.
Remove the six screws (M3x5) that secure the system board to the display-assembly base.
Installing the system board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
48
Removing and installing components