System information

5. Carefully invert the TouchPad button board (1).
6. Release the ZIF connector to which the TouchPad LED board cable is connected, and then
disconnect the TouchPad LED board cable (2) from the TouchPad button board.
7. Lift the TouchPad button board away from the top cover (3).
Reverse this procedure to install the TouchPad button board and cable.
TouchPad LED board
Description Spare part number
TouchPad LED board (includes cable) 683849-001
Before removing the TouchPad LED 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 31).
5. Remove the service door (see
Service door on page 32).
6. Remove the optical drive (see
Optical drive on page 33).
7. Remove the hard drive (see
Hard drive on page 36).
8. Remove the keyboard (see
Keyboard on page 43).
9. Remove the top cover (see
Top cover on page 46).
10. Remove the TouchPad button board (see
TouchPad button board on page 52).
Remove the TouchPad LED board and cable:
1. Turn the top cover upside down, with the front toward you.
2. Apply slight pressure to the retaining clips (1) of the top cover.
Component replacement procedures 53