HP 240 HP 450 Notebook PC and HP 455 Notebook PC Maintenance and Service Guide - Page 77

TouchPad button board, Remove the two Phillips PM2.0×3.0 screws

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TouchPad button board Description TouchPad button board (includes bracket and cables) Spare part number 685099-001 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: ● Memory module/wireless module compartment cover (see WLAN module on page 49) ● Hard drive (see Hard drive on page 54) ● Keyboard (see Keyboard on page 60) ● Top cover (see Top cover on page 63) To remove the TouchPad button board: 1. Turn the top cover upside down with the front toward you. 2. Remove the two Phillips PM2.0×3.0 screws (1) that secure the TouchPad button board and bracket to the top cover. 3. Remove the bracket (2). 4. Release the ZIF connector to the TouchPad board cable (3), and then disconnect the cable from the TouchPad board. (The TouchPad board is attached to the top cover and cannot be removed.) Component replacement procedures 69

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TouchPad button board
Description
Spare part number
TouchPad button board (includes bracket and cables)
685099-001
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:
●
Memory module/wireless module compartment cover (see
WLAN module
on page
49
)
●
Hard drive (see
Hard drive
on page
54
)
●
Keyboard (see
Keyboard
on page
60
)
●
Top cover (see
Top cover
on page
63
)
To remove the TouchPad button board:
1.
Turn the top cover upside down with the front toward you.
2.
Remove the two Phillips PM2.0×3.0 screws
(1)
that secure the TouchPad button board and
bracket to the top cover.
3.
Remove the bracket
(2)
.
4.
Release the ZIF connector to the TouchPad board cable
(3)
, and then disconnect the cable from
the TouchPad board. (The TouchPad board is attached to the top cover and cannot be
removed.)
Component replacement procedures
69