HP nw9440 Maintenance And Service Manual page 165

6. Lift the rear edge of the top cover 1 to disengage it from
the base enclosure.
7. Swing the top cover 2 up and forward until the left and right
sides of the top cover disengage from the base enclosure.
8. Remove the top cover 3.
Removing the Top Cover
Reverse the above procedure to install the top cover.
Maintenance and Service Guide
Removal and Replacement Procedures
5–65