Vostro 3681 Service Manual

Installing the system board

If you are replacing a component, remove the existing component before performing the installation procedure.

The following images indicate the location of the system board and provides a visual representation of the installation procedure:

Installing the system board

Slide the front I/O-ports on the system board into the front I/O-slots on the chassis and align the screw holes on the system board with the screw holes on the chassis.
Align the front I/O-bracket with the slots on the chassis.
Lay the system unit vertically and secure it using the eight #6-32 screws to the chassis.
Replace the screw (M2x4) that secures the system board to the chassis.
Connect the 4-pin power supply ATEX connector to the system board.
Connect the 6-pin power supply ATEX connector to the system board.
Connect the SATA power cable connector to the system board.
Connect the SATA cables to the system board.
Connect the power switch cable to the system board.

Install the processor.
Install the heat sink.
Install the media card reader
Install the WLAN card
Install the solid-state drive/Intel Optane memory module.
Install the graphics card.
Install the memory modules.
Install the HDD/ODD Bracket.
Install the front bezel.
Install the side cover.
Follow the procedure in After working inside your computer.
NOTE:Your computer’s Service Tag is stored in the system board. You must 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. You must make the appropriate changes again after you replace the system board.