HP Pavilion Dv7 4000 Entertainment Notebook Pc Series Manual

							4–22Maintenance and Service Guide
Removal and replacement procedures
11. Disconnect the LED board cable 1 from the low insertion force (LIF) connector on the system board.
12. Disconnect the power button board cable 2 from the LIF connector on the system board.
13. Remove the switch cover.
Reverse this procedure to install the switch cover and keyboard.
Power button board
Before removing the power 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 4-6). 
5. Remove the switch cover and keyboard (see “Switch cover and keyboard” on page 4-18).
Description Spare part number 
Power button board for use in computers with discrete graphics subsystems (includes 
cable)512835-001 
						

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Maintenance and Service Guide4–23
Remove the power button board: 
1. Turn the switch cover upside down with the front toward you. 
2. Remove the Phillips PM2.5×4.0 screw 1 that secures the power button board to the switch cover.
3. Remove the power button board 2 and cable.
Reverse this procedure to install the power button board.
Speaker assembly
✎The Speaker assembly kit includes left and right speakers and cable.
Before removing the speaker 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 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 4-6). 
5. Remove the switch cover and keyboard (see “Switch cover and keyboard” on page 4-18).
6. Remove the power button board (see “Power button board” on page 4-22)
Remove the speaker assembly. 
1. Position the computer with the keyboard facing up its front edge toward you. 
2. Disconnect the speaker cable 1 from the system board.
3. Remove the four Phillips PM2.0x4.0 screws 2 that secure the speaker assembly.
4. Remove the Phillips PM2.5x7.0 screw 3 that secures the center of the speaker assembly.
Description Spare part number 
Speaker assembly for use in all countries and regions except India 533865-001 
Speaker assembly for use only in India 571902-001 
						

							4–24Maintenance and Service Guide
Removal and replacement procedures
5. Remove the speaker assembly 4. 
Reverse this procedure to install the speaker assembly. 
Display assembly
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 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 4-6). 
5. Remove the wireless antenna cables from the WLAN module (see “WLAN module” on page 4-16).
6. Remove the switch cover and keyboard (see “Switch cover and keyboard” on page 4-18).
Remove the display assembly: 
1. Disconnect the display panel cable 1 and the webcam/microphone cable 2 from the system board. 
2. Remove the WLAN antenna cables from the clips 3 built into the top cover. 
Description Spare part number 
15.6-inch BrightView display assembly with webcam and 2 microphones for use in 
white computers538348-001 
15.6-inch BrightView display assembly with webcam and 2 microphones for use in 
black computers538312-001 
						

							Removal and replacement procedures
Maintenance and Service Guide4–25
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CAUTION: Support the display assembly when removing the following screws. Failure to support the display assembly can 
result in damage to the display assembly and other computer components.
3. Remove the four Phillips PM2.5×6.5 screws 1 that secure the display assembly to the computer.
4. Lift the display assembly 2 straight up and remove it. 
✎See “Webcam/microphone module” on page 4-7 for webcam/microphone module replacement instructions for 
computer models equipped with BrightView display assemblies.
5. Remove the two Phillips PM2.5×5.0 screws 1 that secure the display hinge to the display panel.
6. Remove the display hinge 2. The display hinge is available in the Display Hinge Kit, spare part number 
574556-001.  
						

							4–26Maintenance and Service Guide
Removal and replacement procedures
7. If it is necessary to replace the display bezel or any of the display assembly internal components, remove the 
following screw covers and screws: Two rubber screw covers on the display bezel bottom edge 1. Two 
Phillips PM2.5×6.5 screws 2. The display rubber screw covers are included in the Display Rubber Kit, spare 
part number 512361-001. 
8. Flex the inside edges of the top edge 1, the left and right sides 2, and the bottom edge 3 of the display bezel 
until the bezel disengages from the display enclosure.
9. Remove the display bezel 4. The display bezel is available using spare part number 512364-001. 
						

							Removal and replacement procedures
Maintenance and Service Guide4–27
10. If it is necessary to replace the display inverter, release the display inverter 1 as far from the display enclosure 
as the display panel cable and backlight cable allow.
11. Disconnect the display panel cable 2 and the backlight cable 3 from the display inverter.
12. Remove the display inverter. The display inverter is available using spare part number 488317-001. 
						

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Removal and replacement procedures
13. If it is necessary to replace the display panel, remove the two Phillips PM2.5×5.0 screws 1 from the top 
corners and the six Phillips PM2.5×5.0 screws 2 from the display hinges. 
14. Flex the bottom 1 of the display panel and release the display hinges. Disconnect the display LED cable 2 
from the display panel cable. Remove the display panel 3. The display panel is available using spare part 
number 570095-001.  
						

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15. If it is necessary to replace the display hinges, remove the two Phillips PM2.0×3.0 screws 1 that secure each 
display hinge to the display panel. 
16. Remove the display hinges 2. The display hinges are available in the Display Hinge Kit, spare part number 
574556-001. The display hinge screws are available in the Display Screw Kit, spare part number 512362-001. 
I
17. If it is necessary to remove the display panel cable, remove the adhesive plastic strip 1 from the display panel 
cable, and disconnect the display panel cable from the top of the display panel 2. Remove the tape 3 that 
secures the cable to the display panel. The display panel cable is available using spare part number 
574554-001.
Reverse this procedure to reassemble and install the display assembly.  
						

							4–30Maintenance and Service Guide
Removal and replacement procedures
Top cover
✎The top cover spare parts kit includes the following: speakers, TouchPad and cable, LED board and cable, and 
switch cover. 
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 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 4-6). 
5. Remove the following components: 
a. Hard drive (see “Hard drive” on page 4-14)
b. Optical drive (see “Optical drive” on page 4-9) 
c. Switch cover and keyboard (see “Switch cover and keyboard” on page 4-18)
d. Speaker assembly (see “Speaker assembly” on page 4-23)
e. Display assembly (see “Display assembly” on page 4-24)
Remove the top cover: 
1. Turn the computer upside down, with the front toward you. 
2. Remove the 9 Phillips 2.5×6.5 screws 1 that secure the top cover to the bottom of the computer. 
3. Remove the one Phillips PM2.5×7.0 screw 2 that secures the top cover to the computer. This screw is in the 
battery bay.
Description Spare part number 
Top cover for use only with black computer models equipped with a fingerprint reader 579160-001 
Top cover for use only with black computer models not equipped with a fingerprint 
reader518788-001
Top cover for use only with white computer models not equipped with a fingerprint 
reader518108-001 
						

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4. Turn the computer right-side up, with the front toward you.
5. Disconnect the following cables from the system board:
a. TouchPad cable 1
✎On computer models equipped with a standard display assembly, this cable connects to a ZIF connector on the 
system board. On computer models equipped with a Flush Glass display assembly, this cable connects to a LIF 
connector on the system board.
b. Fingerprint reader board cable 2
✎This cable connects to a LIF connector on the system board.
c. Speaker cable 3
✎Step 6 applies only to computer models equipped with standard display assemblies.
6. Remove the four Phillips PM2.5×4.0 screws that secure the top cover to the computer.
7. Remove the Phillips PM2.5×7.0 screw that secures the top cover to the computer.