HP mt42 Maintenance and Service Guide - Page 57

USB/audio board, Disconnect the cable from the board

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USB/audio board Description USB/audio board Spare part number 837846-001 Before removing the USB/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 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 USB/audio board: 1. Disconnect the cable from the board (1). 2. Remove the 2 Phillips PM2.5×5.0 screws (2) that secure the USB/audio board to the computer. 3. Lift the board off the top cover (3). Reverse this procedure to install the USB/audio board. Component replacement procedures 47

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USB/audio board
Description
Spare part number
USB/audio board
837846-001
Before removing the USB/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 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 USB/audio board:
1.
Disconnect the cable from the board
(1)
.
2.
Remove the 2 Phillips PM2.5×5.0 screws
(2)
that secure the USB/audio board to the computer.
3.
Lift the board
off
the top cover
(3)
.
Reverse this procedure to install the USB/audio board.
Component replacement procedures
47