TouchPad button board
Description Spare part number
TouchPad button board (includes cable) 734418-001
Before removing the TouchPad button board, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see Battery on page 25), and then remove the following components:
a. Service cover (see Service cover on page 26)
b. Keyboard (see Keyboard on page 32)
c. Top cover (see Top cover on page 39)
Remove the TouchPad button board:
1. Turn the top cover upside down with the front toward you.
2. Release the TouchPad button board cable (1) from the top cover. (The TouchPad button board cable is
secured to the top cover with double-sided adhesive.)
3. Release the ZIF connector (2) to which the TouchPad cable is attached, and then disconnect the
TouchPad cable from the TouchPad board.
4. Remove the two Phillips PM2.0×3.5 screws (3) that secure the TouchPad button board to the top cover.
44 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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