System board
Description Spare part number
System board with integrated Intel Core i7-8650U processor and 16 GB of system memory L31341-601
System board with integrated Intel Core i7-8650U processor and 8 GB of system memory L31978-601
System board with integrated Intel Core i7-8550U processor and 16 GB of system memory L33481-601
System board with integrated Intel Core i7-8550U processor and 8 GB of system memory L31977-601
System board with integrated Intel Core i5-8350U processor and 16 GB of system memory L31339-601
System board with integrated Intel Core i5-8350U processor and 8 GB of system memory L31337-601
System board with integrated Intel Core i5-8250U processor and 16 GB of system memory L31335-601
System board with integrated Intel Core i5-8250U processor and 8 GB of system memory L31333-601
System board with integrated Intel Core i3-8130U processor and 8 GB of system memory L31331-601
USB bracket (includes AL foil) L31356-001
IMPORTANT: Make special note of each screw size and location during removal and replacement.
Before removing the system board, follow these steps:
1. Turn o 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Display panel (see Display panel on page 33)
b. Battery (see Battery on page 36)
c. Solid-state drive (see Solid-state drive on page 38)
d. WWAN module (see WWAN module (select products only) on page 41)
e. Camera connector bracket (see Camera connector bracket on page 44)
f. IR camera (see IR camera on page 45)
g. HD camera (see Front-facing HD camera on page 46)
h. Microphone board (see Microphone board on page 48)
i. Rear-facing camera (see Rear-facing camera on page 47)
j. IR LED module (see IR LED module on page 50)
Remove the system board:
1. Disconnect the following cables from the system board:
(1) Fingerprint reader cable
(2) Speaker cable
Component replacement procedures 51
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