HP ProBook 4545s HP ProBook 4545s Notebook PC - Maintenance and Service Guide - Page 69

Audio board, Keyboard see

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Audio board Description Audio board Spare part number 683475-001 Before removing the audio board, follow these steps: 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 unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Bottom door (see Bottom door on page 35). b. Optical drive (see Optical drive on page 39). c. Hard drive (see Hard drive on page 42). d. Keyboard (see Keyboard on page 44). e. Metal heat shield (see Metal heat shield on page 48). f. Top cover (see Top cover on page 55) Remove the audio board: 1. Position the top cover upside-down with the front toward you. 2. Disconnect the audio board cable(1). 3. Remove the 2 Phillips PM2.5×5.0 screws (2) that secure the audio board to the top cover. Component replacement procedures 61

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Audio board
Description
Spare part number
Audio board
683475-001
Before removing the audio board, follow these steps:
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 unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery
on page
34
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
35
).
b.
Optical drive (see
Optical drive
on page
39
).
c.
Hard drive (see
Hard drive
on page
42
).
d.
Keyboard (see
Keyboard
on page
44
).
e.
Metal heat shield (see
Metal heat shield
on page
48
).
f.
Top cover (see
Top cover
on page
55
)
Remove the audio board:
1.
Position the top cover upside-down with the front toward you.
2.
Disconnect the audio board cable
(1)
.
3.
Remove the 2 Phillips PM2.5×5.0 screws
(2)
that secure the audio board to the top cover.
Component replacement procedures
61