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 6-9 System board description and part number
Description Spare part number
AMD Ryzen 7 2700U processor L55321-xxx
AMD Ryzen 5 2500U processor L52215-xxx
AMD Ryzen 3 2200U processor L52214-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” (Battery Safe mode on page 34).
3. Remove the following components:
a. Bottom cover (Bottom cover on page 35).
b. Battery (Battery on page 36)
c. Fan (Fan on page 46)
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 (Memory modules on page 37)
● WLAN/Bluetooth module (WLAN/Bluetooth combo card on page 38)
● M.2 solid-state drive (M.2 solid-state drive on page 40)
● Heat sink (Heat sink on page 47)
Remove the system board:
1. Disconnect the following cables from the system board:
(1): Power connector cable
(2): Antennas from WLAN module (select models only)
(3): Speaker cable
(4): Display cable (ZIF)
(5): USB cable from USB/power board (ZIF)
(6): Keyboard cable (ZIF)
(7): Card reader cable (ZIF)
(8): TouchPad cable (ZIF)
Component replacement procedures 57
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