HP Pavilion Dv4 1200 Entertainment Notebook Pc Series Manual

							USB board
DescriptionSpare part number
USB board (includes USB board cable) 486842-001
Before removing the USB 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.Wireless module compartment 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 USB board:
1.Disconnect the USB board cable (1) from the system board.
2.Remove the cable (2) from the clip in the base enclosure.
3.Remove the Phillips PM2.5×4.0 screw (3) that secures the USB board to the computer.
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							4.Lift the USB board (4) straight up to remove it from the computer.
Reverse this procedure to install the USB board.
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							TV tuner antenna
DescriptionSpare part number
TV tuners 
●ATSC/NTSC TV tuner antenna482900-001
●TV tuner antenna with PAL jack482900-002
●ATSC/NTSC TV tuner482899-001
●DVB-T/ANG Integrated TV tuner482899-002
●DVB-T tuner482899-003
●DVB-T tuner for use only in the AP region 482899-004
If it has been determined that the TV tuner antenna cable is the component that must be replaced to
complete the computer repair, follow the procedures in this section to replace the cable.
Before removing the TV antenna cable, 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 keyboard (see 
Keyboard on page 72)
6.Remove the keyboard cover (see 
Keyboard cover on page 74)
7.Remove the display assembly (see 
Display assembly on page 80)
8.Remove the top cover (see 
Top cover on page 92)
9.Remove the USB board (see 
USB board on page 103)
Remove the TV tuner antenna cable:
1.Disconnect the TV tuner antenna cable from the system board (1).
Component replacement procedures 105 
						

							2.Remove the cable from the base enclosure clips (2).
Reverse this procedure to install the TV tuner antenna cable.
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							System board
DescriptionSpare part number
System boards (include thermal material)
For use in computer models with Intel processors:
 
●On models equipped with a 256-MB discrete graphics subsystem486723-001
●On models equipped with a 512-MB discrete graphics subsystem496730-001
●On models equipped with a UMA graphics subsystem486724-001
For use in computer models with AMD processors: 
●With QuickPlay488238-001
●With MediaSmart 511858-001
NOTE:All system board spare part kits include replacement thermal material.
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 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.Optical drive (see 
Optical drive on page 57)
c.Keyboard (see 
Keyboard on page 72)
d.Keyboard cover (see 
Keyboard cover on page 74)
e.Display assembly (see 
Display assembly on page 80)
f.Top cover (see 
Top cover on page 92)
Remove the system board:
1.Disconnect the following cables from the system board:
●Modem module cable (1)
●Audio board cable (2)
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							2.Disconnect the power connector cable from the system board.
3.Remove the two Phillips PM1.5×9.0 slotted screws (1), and the Phillips PM2.5×4.0 screw (2) that
secure the system board to the computer.
4.Use the optical drive connector (1) to lift the right side of the system board until it rests at an angle.
5.Lift the system board (2).
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							6.Release the system board (3) by sliding it to the right at an angle until the connectors on the left
side of the system board disengage from the base enclosure.
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 and heat sink assembly (see 
Fan and heat sink on page 114)
●Processor (see 
Processor on page 118)
●RTC battery (see 
RTC battery on page 69)
●Memory modules (see 
Memory module on page 67)
●WLAN module (see 
WLAN module on page 62)
●Modem module (see 
Modem module on page 99)
Reverse the preceding procedure to install the system board.
Component replacement procedures 109 
						

							Power button board
DescriptionSpare part number
Power button with connector cable 486853-001
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 55).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 59)
b.Optical drive (see 
Optical drive on page 57)
c.Keyboard (see 
Keyboard on page 72)
d.Keyboard cover (see 
Keyboard cover on page 74)
e.Display assembly (see 
Display assembly on page 80)
f.Top cover (see 
Top cover on page 92)
g.System board (see 
System board on page 107)
Remove the power button board:
1.Disconnect the low insertion force (LIF) cable (1) from the power button board.
2.Remove the Phillips PM2.0×4.0 screw (2) that secures the power button board to the system board.
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							3.Remove the power button board (3).
Reverse this procedure to install the power button board.
Component replacement procedures 111 
						

							Modem module cable
DescriptionSpare part number
Modem module cable for use with computer models with Intel processors 494981-001
Before removing the modem module cable, 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)
h.Modem module (see 
Modem module on page 99)
i.System board (see 
System board on page 107)
j.USB board (see 
USB board on page 103)
k.Audio board (see
Audio board on page 101)
Remove the modem module cable:
1.Disconnect the modem module cable from the system board (1).
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