HP Pavilion Hdx9400 Entertainment Notebook Pc Series Service Guide

4.Remove the battery (see Battery on page 36).
5.Remove the hinge cover (see 
Hinge cover on page 52).
Remove the rear cover:
1.Position the computer with the front toward you.
2.Remove the seven Phillips PM2.5×8.0 screws (1) that secure the rear cover to the computer.
3.Remove the Mylar screw cover (2) in the optical drive bay. This screw cover is available in the Rubber
Feet Kit, spare part number 452320-001.
4.Remove the Phillips PM2.5×4.0 screw (3) that secures the rear cover to the computer....

9.Remove the rear cover.
Reverse this procedure to install the rear cover.
Top cover
DescriptionSpare part number
Top cover (includes TouchPad board cable and TouchPad button cable, and LED boards and cables) 448174-001
Before removing the top cover, 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...

3.Remove the two Phillips PM2.5×4.0 screws (2) and the ten Phillips PM2.5×8.0 screws (3) that secure
the top cover to the computer.
4.Remove the four Phillips PM2.5×5.0 screws (1) and the two Phillips PM2.5×11.0 screws (2) that
secure the top cover to the computer.
5.Turn the computer right-side up, with the front toward you.
6.Open the computer as far as possible.
56 Chapter 4   Removal and replacement procedures 

7.Disconnect the following cables:
(1) Fingerprint reader board cable
(2) LED board cable
(3) TouchPad board cable
(4) TouchPad on/off board cable
8.Remove the two Phillips PM2.5×5.0 screws (1) that secure the top cover to the computer.
9.Lift the rear edge of the top cover (2) until the top cover disengages from the computer.
10.Remove the top cover.
Reverse this procedure to install the top cover.
Fingerprint reader board
DescriptionSpare part number
Fingerprint reader board (includes cable)...

Before removing the fingerprint reader 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 36).
5.Remove the...

Before removing the TouchPad on/off 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 36).
5.Remove the following...

Display assembly
DescriptionSpare part number
20.1-inch, WSXGA BrightView display assembly (includes camera module and cable, microphones,
speakers, and WLAN antennae)452299-001
20.1-inch, WUXGA BrightView display assembly (includes camera module and cable, microphones,
speakers, and WLAN antennae)452300-001
Before removing the display assembly, 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...

2.Remove the six Phillips PM3.0×8.0 screws that secure the display assembly to the computer.
3.Turn the computer display-side up, with the front toward you.
4.Open the computer to an upright position.
5.Disconnect the following cable connectors:
(1) Display panel cable
(2) Camera module cable
(3) Speaker cable
(4) Microphone cable
NOTE:The speaker cables are black and red and share a single connector. The microphone cables
are gray and white and share a single connector. Be sure that these connectors are...

7.Remove the six Phillips PM3.0×8.0 screws (1) that secure the display assembly to the computer.
8.Remove the display assembly (2).
NOTE:If it is necessary to replace any of the display assembly internal components, see Display
assembly internal components on page 37 for display bezel removal information.
Reverse this procedure to install the display assembly.
Audio/infrared board
DescriptionSpare part number
Audio/infrared board452316-001
Before removing the audio/infrared board, follow these steps:...

Remove the audio/infrared board:
1.Disconnect the audio/infrared board cable (1) from the system board.
2.Remove the two Phillips PM2.5×5.0 screws (2) that secure the audio/infrared board to the computer.
3.Remove the audio/infrared board (3) from the base enclosure.
Reverse this procedure to install the audio/infrared board.
Bluetooth module
NOTE:The Bluetooth module spare part kit does not include a Bluetooth module cable. The Bluetooth
module cable is available in the Cable Kit, spare part number...