HP ENVY 15-3033cl HP ENVY 15 - Maintenance and Service Guide - Page 80

System board, defective system board and installed on the replacement system board

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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 668848-001. NOTE: The system board spare part kit includes 1 GB of discrete graphics subsystem memory. Description Equipped with the 7750M chipset for use in all countries and regions except the People's Republic of China Equipped with the 7750M chipset for use only in the People's Republic of China Equipped with the 7670M chipset Spare part number 679814-001 694500-001 668847-001 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 35), and then remove the following components: a. Hard drive (see Hard drive on page 37) b. Wireless audio module (see Wireless audio module on page 40) c. WLAN module (see WLAN module on page 42) d. Top cover (see Top cover on page 47) e. Top speakers (see Top speakers on page 69) 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 45) ● Memory module (see Memory module on page 46) ● Fan/heat sink assembly (see Fan/heat sink assembly on page 76) ● Processor (see Processor on page 80) Remove the system board: 1. Close the computer. 2. Turn the computer upside down, with the front toward you. 72 Chapter 4 Removal and replacement procedures ENWW

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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 668848-001.
NOTE:
The system board spare part kit includes 1 GB of discrete graphics subsystem memory.
Description
Spare part number
Equipped with the 7750M chipset for use in all countries and regions except the People's Republic
of China
679814-001
Equipped with the 7750M chipset for use only in the People's Republic of China
694500-001
Equipped with the 7670M chipset
668847-001
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
35
), and then remove the following components:
a.
Hard drive (see
Hard drive
on page
37
)
b.
Wireless audio module (see
Wireless audio module
on page
40
)
c.
WLAN module (see
WLAN module
on page
42
)
d.
Top cover (see
Top cover
on page
47
)
e.
Top speakers (see
Top speakers
on page
69
)
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
45
)
●
Memory module (see
Memory module
on page
46
)
●
Fan/heat sink assembly (see
Fan/heat sink assembly
on page
76
)
●
Processor (see
Processor
on page
80
)
Remove the system board:
1.
Close the computer.
2.
Turn the computer upside down, with the front toward you.
72
Chapter 4
Removal and replacement procedures
ENWW