HP Pavilion Dv4 1200 Entertainment Notebook Pc Series Manual

							2.Remove the three Phillips PM2.5×9.0 screws (1), the two Phillips PM2.5×6.0 screws (2), and the
one Phillips PM2.5×4.0 screws (3) that secure the top cover to the computer.
3.Turn the computer right-side up, with the front toward you.
4.Disconnect the Bluetooth module cable (1), the TouchPad cable (2), the fingerprint reader board
cable (3), and the USB board cable (4) from on the system board.
5.Remove the three Phillips PM2.5×4.0 screws (1).
Component replacement procedures 93 
						

							6.Lift the front edge of the top cover (2) and remove it (3).
Reverse this procedure to install the top cover.
94 Chapter 4   Removal and replacement procedures 
						

							TouchPad
DescriptionSpare part number
TouchPad (include TouchPad bracket and TouchPad cable)494960-001
TouchPad button486832-001
TouchPad bracket (included with top cover spare part kits and with TouchPad) 494961-001
Before removing the TouchPad, 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 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.WLAN cover (see 
WLAN module on page 62)
c.Optical drive (see 
Optical drive on page 57)
d.Keyboard (see 
Keyboard on page 72)
e.Keyboard cover (see 
Keyboard cover on page 74)
f.Display assembly (see 
Display assembly on page 80)
g.Top cover (see 
Top cover on page 92)
Remove the TouchPad:
1.Turn the top cover upside down, with the front toward you.
2.Disconnect the TouchPad cable (1).
3.Remove the five Phillips PM2.5×4.0 screws that secure the TouchPad to the top cover (2).
Component replacement procedures 95 
						

							4.Remove the TouchPad board from the top cover (3).
Reverse the above procedure to reassemble and install the TouchPad.
96 Chapter 4   Removal and replacement procedures 
						

							Fingerprint reader board
DescriptionSpare part number
Fingerprint reader486828-001
Before removing the fingerprint reader, 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 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.WLAN cover (see 
WLAN module on page 62)
c.Optical drive (see 
Optical drive on page 57)
d.Keyboard (see 
Keyboard on page 72)
e.Keyboard cover (see 
Keyboard cover on page 74)
f.Display assembly (see 
Display assembly on page 80)
g.Top cover (see 
Top cover on page 92)
Remove the TouchPad:
1.Turn the top cover upside down, with the front toward you.
2.Fold back the Mylar cover (1).
3.Remove the two Phillips PM2.0×3.0 screws that secure the fingerprint reader to the top cover
(2).
Component replacement procedures 97 
						

							4.Remove the fingerprint reader from the top cover (3).
Reverse the above procedure to reassemble and install the fingerprint reader.
98 Chapter 4   Removal and replacement procedures 
						

							Modem module
DescriptionSpare part number
Modem module for use with most computer models461749-001
Modem module for use with computer models in Australia and New Zealand 461749-011
Before removing the modem module, 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 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.WLAN cover (see 
WLAN module on page 62)
c.Optical drive (see 
Optical drive on page 57)
d.Keyboard (see 
Keyboard on page 72)
e.Keyboard cover (see 
Keyboard cover on page 74)
f.Display assembly (see 
Display assembly on page 80)
g.Top cover (see 
Top cover on page 92)
Remove the modem module:
1.Disconnect the modem module cable (1) from the modem module.
2.Remove the two Phillips PM2.0×4.0 screws (2) that secure the modem module to the system board.
Component replacement procedures 99 
						

							3.Lift up on the back of the modem module (3) to disconnect it from the system board.
4.Remove the modem module.
Reverse the above procedure to install the modem module.
100 Chapter 4   Removal and replacement procedures 
						

							Audio board
DescriptionSpare part number
Audio board (includes audio connectors, infrared lens, and audio board cable) 486840-001
Before removing the 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 battery (see 
Battery on page 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.WLAN cover (see 
WLAN module on page 62)
c.Optical drive (see 
Optical drive on page 57)
d.Keyboard (see 
Keyboard on page 72)
e.Keyboard cover (see 
Keyboard cover on page 74)
f.Display assembly (see 
Display assembly on page 80)
g.Top cover (see 
Top cover on page 92)
Remove the audio board:
1.Disconnect the audio board cable (1) from the system board, and remove the cable from the audio
board (2).
2.Remove the two Phillips PM2.5×4.0 screws (3) that secure the audio board to the computer.
Component replacement procedures 101 
						

							3.Remove the audio board (4).
Reverse the above procedure to install the audio board.
102 Chapter 4   Removal and replacement procedures