HP V4200 - Manual (Page 169)

Removal and Replacement Procedures
Maintenance and Service Guide 5–63
d. Switch cover ( Section 5.12 )
e. Keyboard ( Section 5.13 )
f. Display assembly ( Section 5.14 )
g. Top cover (HP Pavilion dv4200 models, Section 5.15 )
h. Base enclosure (Compaq Presario V4200 and HP Compaq
nx7220 models, Section 5.16 )
2. Turn the computer upside down with the front toward you.
3. Disconnect the speaker cable from the system board.
Disconnecting the Speaker Cable