Prerequisites
1. Follow the procedure in Before working inside your computer.
NOTE: Ensure that your computer is in Service Mode. For more information see, step 6 in Before working inside your
computer.
2. Remove the base cover.
3. Remove the integrated heat sink or discrete heat sink.
About this task
The following image(s) indicate the location of the power-button board and provides a visual representation of the removal
procedure.
Steps
1. Remove the two (M2.5x5.5) screws that secure the left display-assembly hinge on the palm-rest and keyboard assembly.
2. Flip open the left display assembly hinge at a 90-degree angle.
3. Open the latch and disconnect the power-button board cable from its connector on the system board.
4. Remove the screw (M2x3) that secures the power-button board to the palm-rest and keyboard assembly.
5. Lift the power-button board and its cable off the palm-rest and keyboard assembly.
Installing the power-button board
CAUTION: The information in this section is intended for authorized service technicians only.
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
NOTE:
If either the system board or the heat sink is replaced, use the thermal grease provided in the kit to ensure that
thermal conductivity is achieved.
The following image(s) indicate the location of the power-button board and provides a visual representation of the installation
procedure.
70
Removing and installing Field Replaceable Units (FRUs)
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