HP ENVY 15-u400 Maintenance and Service Guide - Page 54

System board, When replacing the system board

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System board NOTE: The system board spare part kit includes replacement thermal material. Description Intel Core i7-5500U processor and a non-Windows 8 operating system Equipped with an Intel Core i7-5500U processor and the Windows 8.1 Standard operating system Intel Core i5-5200U processor and a non-Windows 8 operating system Equipped with an Intel Core i7-5200U processor and the Windows 8.1 Standard operating system Spare part number 809384-001 809384-501 809385-001 809385-501 Before removing the system board, follow these steps: 1. Turn off 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 the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4. Remove the top cover (see Top cover on page 28). 5. Disconnect the battery. NOTE: 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: ● WLAN module (see WLAN module on page 37) ● Memory module (see Memory module on page 49) ● Heat sink (see Heat sink on page 51) 46 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts

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System board
NOTE:
The system board spare part kit includes replacement thermal material.
Description
Spare part number
Intel Core i7-5500U processor and a non-Windows 8 operating system
809384-001
Equipped with an Intel Core i7-5500U processor and the Windows 8.1 Standard operating system
809384–501
Intel Core i5-5200U processor and a non-Windows 8 operating system
809385-001
Equipped with an Intel Core i7-5200U processor and the Windows 8.1 Standard operating system
809385–501
Before removing the system board, follow these steps:
1.
Turn off 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 the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the top cover (see
Top cover
on page
28
).
5.
Disconnect the battery.
NOTE:
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:
●
WLAN module (see
WLAN module
on page
37
)
●
Memory module (see
Memory module
on page
49
)
●
Heat sink (see
Heat sink
on page
51
)
46
Chapter 5
Removal and replacement procedures for Authorized Service Provider parts