Maintenance and Service Guide

When replacing the system board, be sure to remove the following components (as applicable) from
the defective system board and install them on the replacement system board:
● WLAN module (see WLAN module on page 50)
● Memory modules (see Memory module on page 43)
● Heat sink (see Heat sink assembly on page 57)
Remove the system board:
IMPORTANT: Make special note of each screw size and location during removal and replacement
1. Disconnect the following cables from the system board:
(1) Keyboard backlight cable
(2) Hard drive connector cable
(3) Speaker cable
(4) USB/card reader board cable
(5) Keyboard cable
(6) TouchPad button board cable
(7) Power connector cable
2. Remove the two Phillips M2.0 × 3.0 screws that secure the system board to the computer (1).
72 Chapter 6 Removal and replacement procedures for authorized service provider parts