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 with integrated AMD Ryzen 3 PRO 2300U Mobile Processor L29298-301
Before removing the system board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst 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 33).
5. Remove the battery (see Battery on page 46).
6. Remove the keyboard (see Keyboard on page 42).
7. Remove the RJ-45 board and bracket (see RJ-45 board with bracket on page 52).
8. Remove the fan (see Fan on page 61).
When replacing the system board, be sure to remove the following components (as applicable) from the
defective system board and install on the replacement system board:
● Solid-state drive (see Solid-state drive (SSD) on page 35)
● Memory modules (see Memory modules on page 36)
● WLAN/Bluetooth module (see WLAN/Bluetooth combo card on page 38)
● WWAN module (see WWAN module on page 40)
● Heat sink (see Heat sink assembly on page 48)
Remove the system board:
1. Position the computer upright and open as far as possible.
Component replacement procedures 63
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