HP (Hewlett-Packard) nx9420 Laptop User Manual


 
Removal and Replacement Procedures
Maintenance and Service Guide 5–75
5.26 USB/Audio Board
Full-featured models are equipped with a USB/audio board.
Defeatured models are equipped with an audio board. The
removal procedures are identical for both boards.
1. Prepare the computer for disassembly (Section 5.3),
and then remove the following components:
a. Hard drive (Section 5.4)
b. Bluetooth module (Section 5.6)
c. Optical drive (Section 5.10)
d. Keyboard (Section 5.11)
e. Switch cover (Section 5.15)
f. LED board (Section 5.16)
g. Display assembly (Section 5.22)
h. Top cover (Section 5.23)
i. Speaker (Section 5.24)
j. Fan assembly (Section 5.17)
k. Heat sink (Section 5.18)
l. System board (Section 5.25)
USB/Audio Board Spare Part Number Information
USB/audio board 409968-001