HP Pavilion dv4-4000 HP Pavilion dv4 Entertainment PC - Maintenance and Servic - Page 83

System board, Top cover see

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System board NOTE: The system board spare part kit includes replacement thermal material. Replacement thermal material is also available in the Thermal Material Kit, spare part number 651046-001. Description Spare part number For use only with computer models equipped with an AMD processor and a graphics subsystem with 653427-001 discrete video memory (includes 1-GB of graphics subsystem memory) For use only with computer models equipped with an AMD processor and a graphics subsystem with 653428-001 UMA video memory For use only with computer models equipped with an Intel processor and a graphics subsystem with discrete video memory (includes 1-GB of graphics subsystem memory) 650486-001 For use only with computer models equipped with an Intel processor and a graphics subsystem with UMA video memory 650485-001 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 41), and then remove the following components: a. WLAN module (see WLAN module on page 44) b. WWAN module (see WWAN module on page 47) c. Optical drive (see Optical drive on page 52) d. Hard drive (see Hard drive on page 54) e. Keyboard (see Keyboard on page 57) f. Top cover (see Top cover on page 60) 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: ● SIM (see SIM on page 42) ● RTC battery (see RTC battery on page 49) ● Memory module (see Memory module on page 50) ● Heat sink (see Heat sink on page 79) Component replacement procedures 75

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System board
NOTE:
The system board spare part kit includes replacement thermal material.
Replacement thermal material is also available in the Thermal Material Kit, spare part number
651046-001.
Description
Spare part number
For use only with computer models equipped with an AMD processor and a graphics subsystem with
discrete video memory (includes 1-GB of graphics subsystem memory)
653427-001
For use only with computer models equipped with an AMD processor and a graphics subsystem with
UMA video memory
653428-001
For use only with computer models equipped with an Intel processor and a graphics subsystem with
discrete video memory (includes 1-GB of graphics subsystem memory)
650486-001
For use only with computer models equipped with an Intel processor and a graphics subsystem with
UMA video memory
650485-001
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
41
), and then remove the following components:
a.
WLAN module (see
WLAN module
on page
44
)
b.
WWAN module (see
WWAN module
on page
47
)
c.
Optical drive (see
Optical drive
on page
52
)
d.
Hard drive (see
Hard drive
on page
54
)
e.
Keyboard (see
Keyboard
on page
57
)
f.
Top cover (see
Top cover
on page
60
)
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:
●
SIM (see
SIM
on page
42
)
●
RTC battery (see
RTC battery
on page
49
)
●
Memory module (see
Memory module
on page
50
)
●
Heat sink (see
Heat sink
on page
79
)
Component replacement procedures
75