HP Pavilion Dv9500 Entertainment Notebook Pc Series Service Guide

							Remove the rear USB board:
1.Remove the two silver Phillips PM2.5×5.0 screws (1) that secure the power connector bracket to
the computer.
2.Remove the power connector bracket (2). The power connector bracket is available using spare
part number 432985-001.
3.Remove the silver Phillips PM2.5×5.0 screw (1) that secures the rear USB board to the base
enclosure.
4.Remove the rear USB board cable from the clips (2) built into the base enclosure.
5.Release the rear USB board (3) from the base enclosure as far as the rear USB board cable allows.
6.Disconnect the rear USB board cable (4) from the rear USB board.
7.Remove the rear USB board.
Reverse this procedure to install the rear USB board.
Component replacement procedures 91 
						

							System board
NOTE:All system board spare kits include a modem module cable and hard drive thermal pads.
DescriptionSpare part number
System board for use with computer models with Intel processors: 
With 256 MB of video system memory for use only with computer models with discrete video system
memory447983-001
With 128 MB of video system memory for use only with computer models with discrete video system
memory447982-001
System board for use only with computer models with UMA video system memory447984-001
System board for use with computer models with AMD processors: 
With discrete video system memory450799-001
With UMA video system memory450800-001
Processor bracket v8.1450371-001
Processor bracket v7.9450370-001
Before removing the system 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 47).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 52)
b.Optical drive (see 
Optical drive on page 59)
c.Switch cover (see 
Switch cover on page 61)
d.Keyboard (see 
Keyboard on page 63)
e.Speaker assembly (see 
Speaker assembly on page 66)
f.Display assembly (see 
Display assembly on page 69)
g.Top cover (see 
Top cover on page 75)
h.Wireless switch board (see 
Wireless switch board on page 80)
i.Front USB board (see 
Front USB board on page 84)
j.ExpressCard assembly (see 
ExpressCard assembly on page 85)
92 Chapter 4   Removal and replacement procedures 
						

							k.Top cover trim (see Top cover trim on page 87)
l.Rear USB board (see 
Rear USB board on page 90)
When replacing the system board, be sure that the following components are removed from the defective
system board and installed on the replacement system board:
●Memory modules (see 
Memory module on page 54)
●RTC battery (see 
RTC battery on page 56)
●WLAN module (see 
WLAN module on page 57)
●Bluetooth module (see 
Bluetooth module on page 82)
●ExpressCard assembly (see 
ExpressCard assembly on page 85)
●Optical drive connector board (see 
System board on page 92)
Remove the system board:
1.Turn the computer upside down with the front toward you.
2.Remove the Phillips PM2.5×8.0 screw that secures the system board to the base enclosure.
3.Turn the computer right-side up, with the front toward you.
Component replacement procedures 93 
						

							4.Remove the three Phillips PM2.5×8.0 screws (1) and the three silver Phillips PM2.5×5.0 screws
(2) that secure the system board to the base enclosure.
5.Remove the power connector cable (1) and the rear USB board cable (2) from the clips built into
the base enclosure.
6.Use the area immediately behind the optical drive connector board (1) to lift the right side of the
system board (2) until it rests at an angle.
7.Remove the optical drive connector board (3). The optical drive connector board is available using
spare part number 432992-001.
94 Chapter 4   Removal and replacement procedures 
						

							8.Disconnect the audio board cable (4) from the system board.
9.Disconnect the power connector cable (1) from the system board.
10.Remove the system board (2) from the base enclosure by sliding it up and to the right at an angle.
11.If it is necessary to replace the rear USB board cable, turn the system board upside down with the
front toward you.
Component replacement procedures 95 
						

							12.Disconnect the rear USB board cable from the system board. The rear USB board cable is included
with the rear USB board spare part kit and is also included in the Cable Kit, spare part number
448015-001.
When replacing the system board, be sure that the following components are removed from the defective
system board and installed on the replacement system board:
●Fan/heat sink assembly (see 
Fan/heat sink assembly on page 99)
●Processor (see 
Processor on page 103)
Reverse the preceding procedure to install the system board.
96 Chapter 4   Removal and replacement procedures 
						

							Audio board
DescriptionSpare part number
Audio board (includes audio board cable) 449763-001
Before removing the system 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 47).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 52)
b.Optical drive (see 
Optical drive on page 59)
c.Switch cover (see 
Switch cover on page 61)
d.Keyboard (see 
Keyboard on page 63)
e.Speaker assembly (see 
Speaker assembly on page 66)
f.Display assembly (see 
Display assembly on page 69)
g.Top cover (see 
Top cover on page 75)
h.Wireless switch board (see 
Wireless switch board on page 80)
i.Front USB board (see 
Front USB board on page 84)
j.ExpressCard assembly (see 
ExpressCard assembly on page 85)
k.Top cover trim (see 
Top cover trim on page 87)
l.Rear USB board (see 
Rear USB board on page 90)
m.System board (see 
System board on page 92)
Remove the fan/heat assembly:
1.Remove the silver Phillips PM2.5×5.0 screw (1) that secures the audio board to the base enclosure.
2.Release the audio board (2) by sliding it back until the audio connectors disengage from the
openings in the base enclosure.
Component replacement procedures 97 
						

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

							Fan/heat sink assembly
NOTE:All fan/heat sink assembly spare kits include replacement thermal material.
DescriptionSpare part number
For use only with computer models using Intel processors: 
Equipped with discrete video system memory448016-001
Equipped with UMA video system memory450934-001
For use only with computer models using AMD processors: 
Equipped with UMA video system memory450863-001
Equipped with discrete video system memory 450864-001
NOTE:When replacing the fan/heat sink assembly, be sure that the display switch module is removed
from the defective fan/heat sink assembly and installed on the replacement fan/heat sink assembly. See
Display switch module on page 89 for display switch module removal and spare part number information.
NOTE:To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the right side
and rear panel of the computer. The computer uses an electric fan for ventilation. The fan is controlled
by a temperature sensor and is designed to turn on automatically when high temperature conditions
exist. These conditions are affected by high external temperatures, system power consumption, power
management/battery conservation configurations, battery fast charging, and software applications.
Exhaust air is displaced through the ventilation grill located on the left side of the computer.
Before removing the fan/heat sink 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 47).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 52)
b.Optical drive (see 
Optical drive on page 59)
c.Switch cover (see 
Switch cover on page 61)
d.Keyboard (see 
Keyboard on page 63)
e.Speaker assembly (see 
Speaker assembly on page 66)
f.Display assembly (see 
Display assembly on page 69)
g.Top cover (see 
Top cover on page 75)
h.Wireless switch board (see 
Wireless switch board on page 80)
Component replacement procedures 99 
						

							i.Audio board (see Audio board on page 97)
j.Front USB board (see 
Front USB board on page 84)
k.Top cover trim (see 
Top cover trim on page 87)
l.System board (see 
System board on page 92)
Remove the fan/heat assembly:
1.Turn the system board upside down, with the expansion port 3 and external monitor port toward
you.
2.Disconnect the fan cable (1) from the system board.
3.Loosen the three Phillips PM2.5×5.0 captive screws (2) that secure the fan/heat sink assembly to
the system board.
100 Chapter 4   Removal and replacement procedures