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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 10 operating system
Table 5-16
System board descriptions and part numbers
Description
Spare part number
System board with integrated Intel Core i7-10510U processor
L77225-xxx
System board with integrated Intel Core i5-10210U processor
L77221-xxx
System board with integrated Intel Core i5-10210U processor (for use in models with WWAN)
L77223-xxx
System board with integrated Intel Core i3-10110U processor
L77217-xxx
System board with integrated Intel Core i3-10110U processor (for use in models with WWAN)
L77219-xxx
Before removing the system board, follow these steps:
1.
Prepare the computer for disassembly (
Preparation for disassembly on page 34
).
2.
Place the computer in Battery Safe mode (
).
3.
Remove the following components:
a.
Bottom cover (
b.
Battery (
)
c.
Fan (
)
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:
●
Memory modules (
●
WLAN/Bluetooth module (
WLAN/Bluetooth combo card on page 39
)
●
WWAN module (
●
M.2 solid-state drive (
M.2 solid-state drive on page 43
●
Heat sink (
Remove the system board:
1.
Disconnect the following cables from the system board:
(1) Power connector cable
(2) Antennas from WWAN module (select models only)
(3) Antennas from WLAN module (select models only)
(4) Speaker cable
(5) Display cable (ZIF)
Component replacement procedures
57