Dell Vostro 5490 Service Manual - Page 44

Installing the system board

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Steps 1. Locate the system board on your computer. 2. Remove the three (M2.5x5) screws that secure the left hinge to the system board. 3. Lift the left hinge at a 90-degree angle. 4. Disconnect the power-adapter port cable from the connector in the system board. 5. Lift the latch and disconnect the power button cable from the connector on the system board. 6. Peel the adhesive tape above the display cable connector. 7. Lift the latch and disconnect the display cable from the connector on the system board. 8. Peel the adhesive tape that secures the WLAN antenna cables. 9. Disconnect the coin-cell battery cable and the speaker cable from the connectors on the system board. 10. Lift the latch and disconnect the hard drive cable and touchpad cable, keyboard backlit cable and the keyboard cable from the connectors on the system board. 11. Remove the five (M2x4) and two (M2x5) screws that secure the system board to the plamrest assembly. 12. Lift the system board off the palmrest assembly. Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the system board and provides a visual representation of the installation procedure. 44 Removing and installing components

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Steps
1.
Locate the system board on your computer.
2.
Remove the three (M2.5x5) screws that secure the left hinge to the system board.
3.
Lift the left hinge at a 90-degree angle.
4.
Disconnect the power-adapter port cable from the connector in the system board.
5.
Lift the latch and disconnect the power button cable from the connector on the system board.
6.
Peel the adhesive tape above the display cable connector.
7.
Lift the latch and disconnect the display cable from the connector on the system board.
8.
Peel the adhesive tape that secures the WLAN antenna cables.
9.
Disconnect the coin-cell battery cable and the speaker cable from the connectors on the system board.
10.
Lift the latch and disconnect the hard drive cable and touchpad cable, keyboard backlit cable and the keyboard cable from the
connectors on the system board.
11.
Remove the five (M2x4) and two (M2x5) screws that secure the system board to the plamrest assembly.
12.
Lift the system board off the palmrest assembly.
Installing the system board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The figure indicates the location of the system board and provides a visual representation of the installation procedure.
44
Removing and installing components