13. Open the latch and disconnect the I/O board cable from the system board14. Disconnect the fan cable from the system board.15. Remove the two screws (M2x1.8) that secure the system board to the palm-rest and keyboard assembly.16. Lift the system board at angle off the palm-rest and keyboard assembly, to clear the ports from the port openings.Installing the system boardPrerequisitesCAUTION: The information in this section is intended for authorized service technicians only.If you are replacing a component, remove the existing component before performing the installation process.About this taskThe following image(s) indicate the location of the system board and provides a visual representation of the installationprocedure.1. Display cable connector2. Power-cable connector3. Battery-cable connector4. Keyboard-cable connector5. Touchpad-cable connector6. Keyboard-backlight cable connector7. Speaker cable connector8. I/O board-cable connector9. Fan-cable connectorNOTE: The system board can be removed and installed along with the heat sink, when you replace the palm-rest andkeyboard assembly. This simplifies the removal and installation procedure and also prevents damage to the thermal bondbetween the system board and heat sink.Removing and installing components 49