Installing The System Board - Dell Vostro 3681 Service Manual

Steps
1. Lay the computer on the right side.
2. Remove the screw (#6-32) that secures the front I/O-bracket to the chassis and remove the front I/O-bracket.
3. Disconnect the 4-pin power supply ATEX connector from the system board.
4. Disconnect the 6-pin power supply ATEX connector from the system board.
5. Disconnect the front I/O cable connector from the system board.
6. Disconnect the SATA cables from the system board.
7. Disconnect the power switch cable from the system board.
8. Remove the eight (#6-32) screws that secure the system board to the chassis.
9. Remove the screw (M2x4) that secures the system board to the chassis.
10. Lift the system board at an angle and remove the system board off the chassis.

Installing the system board

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following images indicate the location of the system board and provides a visual representation of the installation procedure:
Disassembly and reassembly 53