HP ProBook 640 G1, 645 G1, 650 G1, and 655 G1 Notebook PCs - Maintenance and Service Guide

Table Of Contents
a. Service cover (see Service cover on page 57)
b. Hard drive (see Hard drive on page 58)
c. Optical drive (see Optical drive on page 69)
d. Keyboard (see Keyboard on page 72)
e. Base enclosure (see Base enclosure on page 82)
Remove the function button board:
1. Turn the top cover upside down, with the front toward you.
2. Release the ZIF connector (1) to which the function button board cable is attached, and then disconnect
the function button board cable from the system board.
3. Remove the three Phillips PM2.0×3.0 screws (2) that secure the function button board to the top cover.
4. Lift the function button board (3) to remove it.
Reverse this procedure to install the function button board.
Function button board 97