System board
NOTE: The system board spare part kit includes replacement thermal material.
Table 5-11 System board descriptions and part numbers
Description Spare part number
System board equipped with an Intel Core i7-8650U processor, 16 GB of system memory, and 64 GB of
eMMC system storage
L50838-001
System board equipped with an Intel Core i5-8350U processor, 8 GB of system memory, and 64 GB of
eMMC system storage
L50837-001
System board equipped with an Intel Core i3-8130U processor, 8 GB of system memory, and 64 GB of
eMMC system storage
L50836-001
System board equipped with an Intel Pentium 4415U processor, 8 GB of system memory, and 32 GB of
eMMC system storage
L50839-001
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the bottom cover (see Computer feet and bottom cover on page 20).
3. Remove the battery (see Battery on page 22).
4. Remove the fan (see Fan on page 25).
When replacing the system board, be sure to remove the following component (if applicable) from
the defective system board and install it on the replacement system board:
ā WLAN module (see WLAN module on page 23)
Remove the system board:
1. Disconnect the following cables from the system board:
(1) Display cable
(2) Touch control cable
(3) Speaker cable
(4) Antenna cables from the WLAN module
(5) Keyboard cable
(6) Backlight cable
(7) TouchPad cable
(8) I/O board cable
36 Chapter 5 Removal and replacement procedures for authorized service providers
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