HP EliteBook 820 G4, Maintenance And Service Manual

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System board
NOTE: All system board spare part kits include replacement thermal material.
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating systems
xxxxxx-601: Windows operating system
Description Spare part number
System board, includes Intel i7-7600U 914274-xxx
System board, includes Intel i7-7500U 914273-xxx
System board, includes Intel i5-7300U 914272-xxx
System board, includes Intel i5-7200U 914271-xxx
System board, includes Intel i3-7100U 914270-xxx
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 bottom cover (see Bottom cover on page 30 ).
5. Remove the battery (see Battery on page 35 ).
6. Remove the following components:
a. Keyboard (see Keyboard on page 46 )
b. Hard drive (see Hard drive on page 36 )
c. Solid-state drive (see Solid-state drive on page 38 )
When replacing the system board, be sure to remove the following components from the defective system
board and install on the replacement system board:
● Memory modules (see Memory modules on page 40 )
● WLAN/Bluetooth module (see WLAN/Bluetooth combo card on page 42 )
● WWAN module (see WWAN module on page 44 )
● Heat sink/fan assembly (see Heat sink/fan assembly on page 56 )
Remove the system board:
1. Position the computer upright and open.
Component replacement procedures 61