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 10 operating system
Description Spare part number
System board with processor for use in models with UMA graphics:
Intel Core i7-8550U processor L28242-xxx
Intel Core i5-8350U processor L35766-xxx
Intel Core i5-8250U processor (WWAN models) L28244-xxx
Intel Core i5-8250U processor L28241-xxx
Intel Core i3-8130U processor (WWAN models) L28243-xxx
Intel Core i3-8130U processor L28239-xxx
Intel Core i5-7200U processor L28240-xxx
Intel Pentium 4415U processor L31173-xxx
Intel Celeron 3865U processor L28238-xxx
System board with processor for use in models with 2 GB of discrete graphics:
Intel Core i7-8550U processor L28248-xxx
Intel Core i5-8250U processor L28247-xxx
Intel Core i3-8130U processor L28245-xxx
Intel Core i5-7200U processor L28246-xxx
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. Place the computer in “Battery Safe mode” (Battery Safe mode on page 31).
3. Disconnect all external devices connected to the computer.
4. 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.
5. Remove the following components:
a. Service door (Service doors on page 32).
b. Keyboard (Keyboard on page 40)
c. Top cover ( Top cover on page 47)
d. Battery (Battery on page 52)
Component replacement procedures 55
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