A SERVICE OF

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TouchPad button board
Description Spare part number
TouchPad button board (includes bracket and cable) 640885-001
Before removing the TouchPad button board, remove the following components:
1. Battery (see
Battery on page 30)
2. Service door (see
Service door on page 31)
3. Hard drive (see
Hard drive on page 32)
4. Optical drive (see
Optical drive on page 34)
5. Keyboard (see
Keyboard on page 39)
6. Top cover (see
Top cover on page 41)
Remove the TouchPad button board:
1. Release the ZIF connector (1) to which the TouchPad button board cable is attached, and then
disconnect the cable (2) from the TouchPad.
2. Remove the screw (3).
3. Remove the TouchPad button board (4).
Reverse the above procedure to reassemble and install the TouchPad button board.
46 Chapter 4 Removal and replacement procedures