HP DV4 manual Audio board

Removal and replacement procedures

Audio board

Description	Spare part number
Audio board	486840-001
Audio board cable	486841-001

Before removing the audio board:

1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.

2.Disconnect all external devices connected to the computer.

3.Disconnect the power from the computer by first disconnecting the power cord from the AC outlet and then disconnecting the AC adapter from the computer.

4.Remove the battery (see “Battery” on page 4-7).

5.Remove the following components:

a.Hard Drive (see “Hard Drive” on page 4-8)

b.Mini Card compartment cover (see “RTC battery” on page 4-12)

c.Mini Card bracket (see “WLAN module” on page 4-15)

d.Optical drive (see “Optical drive” on page 4-19)

e.Keyboard (see “Keyboard” on page 4-20)

f.Keyboard cover (see “Keyboard cover” on page 4-23)

g.Speaker assembly (see “Speaker assembly” on page 4-26)

h.Display assembly (see “Display assembly” on page 4-27)

i.Top cover (see “Top cover” on page 4-34)

4–44 Maintenance and Service Guide