HP (Hewlett-Packard) nx 9420 ユーザーズマニュアル

1. Prepare the computer for disassembly (

2. Turn the computer upside down with the rear panel 

toward you.

3. Remove the four Torx8 T8M2.5×4.0 screws in the 

battery bay that secure the switch cover to the computer.

Switch cover

409948-001

Lid switch board

409958-001