Before removing the TouchPad button 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 33),
5. Remove the display panel (see
Display panel on page 45).
6. Remove the service cover (see
Service cover on page 34).
7. Remove the hard drive (see
Hard drive on page 34).
8. Remove the RTC battery (see RTC battery (see
RTC battery on page 49).
9. Remove the memory modules (see
Memory modules on page 37).
10. Remove the WLAN module (see
WLAN module on page 38).
11. Remove the optical drive (see
Optical drive on page 41).
12. Remove the base enclosure (see
Base enclosure on page 50).
13. Remove the fan (see
Fan on page 69).
14. Remove the system board (see
System board on page 70).
15. Remove the keyboard (see
Keyboard on page 75).
Remove the TouchPad button board and cable:
1. Turn the top cover upside down, with the back edge toward you.
2. Disconnect the cable that secures the TouchPad cable to the system board.
3. Remove the 3 Phillips PM 2.5×3.0 screws (1) and the 2 Phillips PM 2.5x3.0 screws (2) that
secure the TouchPad button board to the top cover.
Component replacement procedures 81
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