HP Pavilion dv4200 Maintenance And Service Manual page 165

7. Lift the left and right rear corners 1 of the base enclosure
until the rear edge of the base enclosure disengages from the
computer.
8. Swing the rear edge of the base enclosure up and forward 2
until it disengages from the computer.
9. Remove the base enclosure.
Removing the Base Enclosure, Compaq Presario V4200 and
HP Compaq nx7220 Models
Reverse the above procedure to install the base enclosure.
Maintenance and Service Guide
Removal and Replacement Procedures
5–59