Table 5-15 System board description and spare part number information (continued)
Description Spare part number
● Equipped with an Intel Core i3-8145U 2.10-GHz (SC turbo up to 3.90-GHz) dual core processor (4.0-
MB L3 cache, 15 W), a UMA graphics subsystem, and the Windows 10 operating system
L36237-601
● Equipped with an Intel Core i3-8145U 2.10-GHz (SC turbo up to 3.90-GHz) dual core processor (4.0-
MB L3 cache, 15 W), a UMA graphics subsystem, and a non-Windows 10 operating system
L36237-001
● Equipped with an Intel Core i3-8130U 2.20-GHz (SC turbo up to 3.40-GHz) dual core processor (4.0-
MB L3 cache, 15 W), a UMA graphics subsystem, and the Windows 10 operating system
L18503-601
● Equipped with an Intel Core i3-8130U 2.20-GHz (SC turbo up to 3.40-GHz) dual core processor (4.0-
MB L3 cache, 15 W), a UMA graphics subsystem, and a non-Windows 10 operating system
L18503-001
● Equipped with an Intel Pentium 4415U 2.3-GHz dual core processor (2.0-MB L3 cache, 15 W), a UMA
graphics subsystem, and the Windows 10 operating system
L18502-601
● Equipped with an Intel Pentium 4415U 2.3-GHz dual core processor (2.0-MB L3 cache, 15 W), a UMA
graphics subsystem, and a non-Windows 10 operating system
L18502-001
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 following components:
a. Bottom cover (see Bottom cover on page 51)
b. Battery (see Battery on page 53)
c. Hard drive (see Hard drive on page 63)
d. Fan (see Fan on page 79)
When replacing the system board, be sure to remove the following components from the defective system
board and install them on the replacement system board:
● WLAN module (see WLAN module on page 66)
● Solid-state drive (see Solid-state drive on page 68) or Optane memory module (see Optane memory
module (select products only) on page 69)
● Memory modules (see Memory module on page 71)
● Heat sink (see Heat sink on page 81)
Remove the system board:
1. Disconnect the following cables:
(1) Fingerprint reader cable
(2) Power connector cable
(3) Display cable
(4) Hard drive cable
86 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
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