HP Pavilion dv4-3100 HP Pavilion dv4 Entertainment PC - Maintenance and Servic - Page 79

System board, Remove the following components

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System board NOTE: The system board kit includes replacement thermal material. Description System board Spare part number 640334-001 641760-001 657602-001 657603-001 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: ● RTC battery (see RTC battery on page 48) ● Memory module (see Memory module on page 37) ● WLAN module (see WLAN module on page 46) ● Fan/heat sink assembly (see Fan/heat sink assembly on page 74) ● Processor (see Processor on page 76) 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 following components: a. Battery (see Battery on page 36) b. Memory module (see Memory module on page 37 ) c. Optical drive (see Optical drive on page 42) d. Keyboard (see Keyboard on page 44) e. Top cover (see Top cover on page 49) f. Display assembly (see Display assembly on page 55) g. Speaker assembly (see Speaker assembly on page 62) ENWW Component replacement procedures 71

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System board
NOTE:
The system board kit includes replacement thermal material.
Description
Spare part number
System board
640334-001
641760-001
657602-001
657603-001
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:
●
RTC battery (see
RTC battery
on page
48
)
●
Memory module (see
Memory module
on page
37
)
●
WLAN module (see
WLAN module
on page
46
)
●
Fan/heat sink assembly (see
Fan/heat sink assembly
on page
74
)
●
Processor (see
Processor
on page
76
)
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 following components:
a.
Battery (see
Battery
on page
36
)
b.
Memory module (see
Memory module
on page
37
)
c.
Optical drive (see
Optical drive
on page
42
)
d.
Keyboard (see
Keyboard
on page
44
)
e.
Top cover (see
Top cover
on page
49
)
f.
Display assembly (see
Display assembly
on page
55
)
g.
Speaker assembly (see
Speaker assembly
on page
62
)
ENWW
Component replacement procedures
71