HP Pavilion dv4-4000 HP Pavilion dv4 Entertainment PC - Maintenance and Servic - Page 76

TouchPad button board, Turn the top cover upside down, with the top toward you.

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TouchPad button board Description TouchPad button board (includes cable) Spare part number 650477-001 Before removing the TouchPad button 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 41), and then remove the following components: a. Memory module/wireless module compartment cover (see WLAN module on page 44) b. Optical drive (see Optical drive on page 52) c. Hard drive (see Hard drive on page 54) d. Keyboard (see Keyboard on page 57) e. Top cover (see Top cover on page 60) Remove the TouchPad button board, bracket, and cable: 1. Turn the top cover upside down, with the top toward you. 2. Remove the two Phillips PM2.0×3.0 screws (1) and two Phillips PM2.0×3.5 screws (2) that secure the TouchPad button board bracket to the top cover. 3. Slide the TouchPad button board bracket (3) back until it releases from the tabs (4) built into the top cover. 68 Chapter 4 Removal and replacement procedures

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TouchPad button board
Description
Spare part number
TouchPad button board (includes cable)
650477-001
Before removing the TouchPad button 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
41
), and then remove the following components:
a.
Memory module/wireless module compartment cover (see
WLAN module
on page
44
)
b.
Optical drive (see
Optical drive
on page
52
)
c.
Hard drive (see
Hard drive
on page
54
)
d.
Keyboard (see
Keyboard
on page
57
)
e.
Top cover (see
Top cover
on page
60
)
Remove the TouchPad button board, bracket, and cable:
1.
Turn the top cover upside down, with the top toward you.
2.
Remove the two Phillips PM2.0×3.0 screws
(1)
and two Phillips PM2.0×3.5 screws
(2)
that
secure the TouchPad button board bracket to the top cover.
3.
Slide the TouchPad button board bracket
(3)
back until it releases from the tabs
(4)
built into
the top cover.
68
Chapter 4
Removal and replacement procedures