HP mt42 Maintenance and Service Guide - Page 56

Touchpad button board, antenna from the NFC module

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Touchpad button board Description Touchpad button board Spare part number 821171-001 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 bottom cover (see Bottom cover on page 25). 5. Remove the battery (see Battery on page 28). 6. Remove the following components: a. Keyboard (see Keyboard on page 36) b. Internal base plate (Internal base plate on page 41) Remove the touchpad button board: 1. Disconnect the cable from the touchpad to the smart card reader board (1), and then disconnect the NFC antenna from the NFC module (2). 2. Lift the tape (3), and then remove the 2 Phillips PM2.5x2.5 screws (4) that secure the touchpad button board to the top cover. 3. Lift the top of the touchpad button board up, and then pull it forward to remove it from the slot (5). Reverse this procedure to install the touchpad board. 46 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

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Touchpad button board
Description
Spare part number
Touchpad button board
821171-001
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 bottom cover (see
Bottom cover
on page
25
).
5.
Remove the battery (see
Battery
on page
28
).
6.
Remove the following components:
a.
Keyboard (see
Keyboard
on page
36
)
b.
Internal base plate (
Internal base plate
on page
41
)
Remove the touchpad button board:
1.
Disconnect the cable from the touchpad to the smart card reader board
(1)
, and then disconnect the NFC
antenna from the NFC module
(2)
.
2.
Lift the tape
(3)
, and then remove the 2 Phillips PM2.5x2.5 screws
(4)
that secure the touchpad button
board to the top cover.
3.
Lift the top of the touchpad button board up, and then pull it forward to remove it from the slot
(5)
.
Reverse this procedure to install the touchpad board.
46
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts