HP Pavilion Hdx9400 Entertainment Notebook Pc Series Service Guide

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 components:
a.Hard drive (see 
Hard drive on page 42)
b.Optical drive (see 
Optical drive on page 49)
c.Keyboard (see 
Keyboard on page 50)
d.Hinge cover (see 
Hinge cover on page 52)
e.Rear cover (see 
Rear cover on page 53)
f.Top cover (see 
Top cover on page 55)
g.Subwoofer (see...

Before removing the RTC battery, 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...

Before removing the processor heat sink, 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...

4.Remove the processor heat sink (3).
NOTE:Due to the adhesive quality of the thermal material located between the processor heat sink
and system board components, it may be necessary to move the processor heat sink from side to
side to detach it.
NOTE:The thermal material must be thoroughly cleaned from the surfaces of the processor heat
sink (1) and the system board (2) each time the processor heat sink is removed. Thermal material
must be installed on all surfaces before the processor heat sink is...

DesriptionSpare part number
X7900 2.8-GHz processor, 4-MB L2 cache453908-001
X7800 2.6-GHz processor, 4-MB L2 cache455738-001 and
452327-001
Intel Core 2 Duo processors (800-MHz FSB, 35-W):
T9500 2.6-GHz processor, 6-MB L2 cache
459609-001
T9300 2.5-Ghz processor, 6-MB L2 cache459608-001
T8300 2.4-GHz processor, 3-MB L2 cache459607-001
T8100 2.1-GHz processor, 3-MB L2 cache459606-001
T7700 2.4-GHz processor, 4-MB L2 cache448148-001
T7500 2.2-GHz processor, 4-MB L2 cache448147-001
T7300 2.0-GHz processor,...

2.Lift the processor (2) straight up and remove it.
NOTE:The gold triangle (3) on the processor must be aligned with the triangle icon (4) embossed
on the processor slot when you install the processor.
Reverse this procedure to install the processor.
Video board heat sink
DescriptionSpare part number
Video board heat sink (includes replacement thermal material) 448176-001
Before removing the video board heat sink, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off...

Remove the video board heat sink:
1.Turn the system board upside down, with the front toward you.
2.Disconnect the video board fan cable (1) from the system board.
3.Loosen the two Phillips PM2.5×9.0 captive screws (2) and the four silver Phillips PM2.0×5.0 captive
screws (3) that secure the video board heat sink to the system board.
4.Remove the video board heat sink (4).
NOTE:Due to the adhesive quality of the thermal material located between the video board heat
sink and system board components, it...

Video board fan
DescriptionSpare part number
Video board fan448163-001
NOTE:To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left and
right sides and rear panel of the computer. The computer uses two electric fans for ventilation. The fans
are controlled by a temperature sensor and are designed to turn on automatically when high temperature
conditions exist. These conditions are affected by high external temperatures, system power consumption,
power management/battery...

3.Remove the video board fan (2).
Reverse this procedure to install the video board fan.
Video board
DescriptionSpare part number
nVidia video board (includes replacement thermal material) 454311-001
Before removing the video board fan, 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...

Remove the video board:
1.Remove the two Phillips PM2.5×4.0 screws (1) that secure the video board to the system board.
2.Lift the right side of the video board (2) until it rests at an angle.
3.Remove the video board (3) by pulling it away from the video board slot at an angle.
NOTE:Video boards are designed with a notch (4) to prevent incorrect installation into the video
board slot.
Reverse this procedure to install the video board.
Component replacement procedures 83