HP ProBook 4430s, 4431s, 4330s and 4331s Notebook PCs - Maintenance and Service Guide

d. WLAN module (see WLAN/Bluetooth combo card on page 59)
e. WWAN module (see
WWAN module on page 57)
f. Fan (see
Fan on page 67)
g. Heat sink (see
Heat sink on page 69)
h. Keyboard (see
Keyboard on page 64)
i. Top cover (see
Top cover on page 72)
Remove the speaker assembly:
1. Position the computer upside-down with the front toward you.
2. Disconnect the speaker cable from the system board (1).
3. Remove the speaker cable from the routing path (2) built into the computer.
4. Position the computer right-side up with the front toward you.
5. Remove the Phillips PM2.0×3.0 screw (1) that secures the speaker assembly to the computer.
Component replacement procedures 85