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...

Removal and replacement procedures
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...

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...

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...

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...

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. 

4–28Maintenance and Service Guide
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.  

Removal and replacement procedures
Maintenance and Service Guide4–29
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. 
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17. If it is necessary to remove the display panel cable, remove...

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...

Removal and replacement procedures
Maintenance and Service Guide4–31
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...