HP ProBook 650 Maintenance and Service Guide - Page 88

Audio board, Remove 2 M2x3L P1 screws

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Audio board Description Audio board Spare part number 840692-001 IMPORTANT: Make special note of each screw and screw lock size and location during removal and replacement Before removing the audio board, follow these steps: 1. Turn off 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 the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4. Remove the following components: a. Service door (see Service door on page 37). b. Remove the battery (see Battery on page 38) c. Hard drive (see Hard drive on page 39). d. Solid-state drive (see Solid-state drive (select products only) on page 41). e. Optical drive (see Optical drive on page 46). f. Keyboard (see Keyboard on page 48). g. Hinge covers (see Hinge cover on page 55). h. Base enclosure (see Base enclosure on page 57). i. System board (see System board on page 59). j. Fan/heat sink assembly (see Fan and heat sink assembly on page 61). k. Top cover (see Top cover and TouchPad on page 65). Remove the audio board: ▲ Remove 2 M2x3L P1 screws (1), and then remove the audio board (2). 78 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

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Audio board
Description
Spare part number
Audio board
840692-001
IMPORTANT:
Make special note of each screw and screw lock size and location during removal and
replacement
Before removing the audio board, follow these steps:
1.
Turn
off
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 the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the following components:
a.
Service door (see
Service door
on page
37
).
b.
Remove the battery (see
Battery
on page
38
)
c.
Hard drive (see
Hard drive
on page
39
).
d.
Solid-state drive (see
Solid-state drive (select products only)
on page
41
).
e.
Optical drive (see
Optical drive
on page
46
).
f.
Keyboard (see
Keyboard
on page
48
).
g.
Hinge covers (see
Hinge cover
on page
55
).
h.
Base enclosure (see
Base enclosure
on page
57
).
i.
System board (see
System board
on page
59
).
j.
Fan/heat sink assembly (see
Fan and heat sink assembly
on page
61
).
k.
Top cover (see
Top cover and TouchPad
on page
65
).
Remove the audio board:
▲
Remove 2 M2x3L P1 screws
(1)
, and then remove the audio board
(2)
.
78
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts