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Function board
Description Spare part number
Function board 727768-001
Before removing the function board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 35).
5. Remove the following components:
a. Service door (see
Service door on page 43).
b. Keyboard (see
Keyboard on page 37)
c. Top cover (see
Top cover on page 50)
Remove the function board assembly:
1. Position the top cover upside-down.
2. Remove the 2 Phillips PM2.0×3.0 screws (1) that secure the board to the top cover.
3. Lift the function board straight up and off the top cover (2).
Reverse this procedure to install the function board.
Component replacement procedures
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