System board
NOTE: All system board spare part kits include a processor and replacement thermal material.
Description Spare part number
Equipped with an Intel Core i7-8550U 1.80-GHz (turbo up to 4.00-GHz) quad core processor (2400-MHz,
8.0-MB L3 cache, 15-W), an Intel UHD 620 graphics subsystem with UMA video memory, 16-GB of system
memory, and the Windows 10 operating system
941884-601
Equipped with an Intel Core i7-8550U 1.80-GHz (turbo up to 4.00-GHz) quad core processor (2400-MHz,
8.0-MB L3 cache, 15-W), an Intel UHD 620 graphics subsystem with UMA video memory, 16-GB of system
memory, and a non-Windows operating system
941884-001
Equipped with an Intel Core i7-8550U 1.80-GHz (turbo up to 4.00-GHz) quad core processor (2400-MHz,
8.0-MB L3 cache, 15-W), an Intel UHD 620 graphics subsystem with UMA video memory, 8-GB of system
memory, and the Windows 10 operating system
941883-601
Equipped with an Intel Core i7-8550U 1.80-GHz (turbo up to 4.00-GHz) quad core processor (2400-MHz,
8.0-MB L3 cache, 15-W), an Intel UHD 620 graphics subsystem with UMA video memory, 8-GB of system
memory, and a non-Windows operating system
941883-001
Equipped with an Intel Core i5-8250U 1.60-GHz (turbo up to 3.40-GHz) quad core processor (2400-MHz,
6.0-MB L3 cache, 15-W), an Intel UHD 620 graphics subsystem with UMA video memory, 8-GB of system
memory, and the Windows 10 operating system
941882-601
Equipped with an Intel Core i5-8250U 1.60-GHz (turbo up to 3.40-GHz) quad core processor (2400-MHz,
6.0-MB L3 cache, 15-W), an Intel UHD 620 graphics subsystem with UMA video memory, 8-GB of system
memory, and a non-Windows operating system
941882-001
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 29), and then remove the following components:
a. Battery (see Battery on page 31)
b. Solid-state drive (see Solid-state drive on page 33)
c. Fans (see Fans on page 35)
When replacing the system board, be sure to remove the heat sink (see Heat sink on page 54) from
the defective system board and install it on the replacement system board.
Remove the system board:
1. Disconnect the following cables from the system board:
(1) Front speaker cables
(2) TouchPad ZIF connector cable
(3) Keyboard ZIF connector cable
(4) Backlight ZIF connector cable
(5) Card reader board ZIF connector cable
Component replacement procedures 51
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