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.
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 location of the connectors on your system board.
Figure 1. System-board connectors
Power-button connector
Left fan connector
Left antenna cable (applicable only to computers shipped with active antenna)
Left speaker cable
Keyboard cable
Right speaker cable
Antenna cables
Right antenna cable (applicable only to computers shipped with active antenna)
Right fan cable
Display cable
The following images indicate the location of the system board and provide a visual representation of the installation procedure.
Steps
Align the screw holes on the system board with the screw holes on the palm-rest and keyboard assembly.
Replace the three screws (M2x4) that secure the system board to the palm-rest and keyboard assembly.
Connect the woofer cable to the system board and close the latch to secure the woofer cable to the system board.
Connect the antenna cables to the wireless card.
The following table provides the antenna-cable color scheme for the wireless card that is supported by your computer.
Table 1. Antenna-cable color scheme
The following table provides the antenna-cable color scheme for the wireless card that is supported by your computer.
Connectors on the wireless card
Antenna-cable color
Main (white triangle)
White
Auxiliary (black triangle)
Black
Connect the speaker cable to the system board and close the latch to secure the speaker cable to the system board.
Replace the two screws (M2x4) that secure the USB Type-C port bracket to the palm-rest and keyboard assembly.
Adhere the Mylar tape that secures the woofer connector and the speaker connector to the system board.
Replace the screw (M2x4) that secures the wireless-card bracket to the system board.
Connect the power-button cable to the system board and close the latch to secure the power-button cable to the system board.
Connect the woofer cable to the system board and close the latch to secure the woofer cable to the system board.
Connect the speaker cable to the system board and close the latch to secure the speaker cable to the system board.
Replace the two screws (M2x4) that secure the USB Type-C port bracket to the palm-rest and keyboard assembly.
Adhere the Mylar tape that secures the woofer connector and the speaker connector to the system board.
Connect the display cable and the camera cable to the display-assembly cable.
Align the screw holes on the display-assembly cable bracket with the screw holes on the system board.
Replace the two screws (M2x4) that secure the display-assembly cable holder to the palm-rest and keyboard assembly.
NOTE Apply gentle torque when tightening the two screws (M2x4) to avoid damaging the screw threads.
