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 AMD Ryzen 7 PRO 4750U M09523-xx1
System board with integrated AMD Ryzen 5 PRO 4650U M09522-xx1
System board with integrated AMD Ryzen 7 4700U processor L98556-xx1
System board with integrated AMD Ryzen 5 4500U processor L98554-xx1
System board with integrated AMD Ryzen 3 4300U processor L98552-xx1
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 31).
2. Place the computer in Battery Safe mode (Battery Safe mode on page 31).
3. Remove the following components:
a. Bottom cover (Bottom cover on page 32).
b. Battery (Battery on page 33)
c. Fan (Fan on page 41)
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 34)
● WLAN/Bluetooth module (WLAN/Bluetooth combo card on page 35)
● M.2 solid-state drive (M.2 solid-state drive on page 37)
● Heat sink (Heat sink on page 42)
Remove the system board:
1. Disconnect the following cables from the system board:
(1) Power connector cable
(2) Speaker cable
(3) Display cable (ZIF)
(4) Antennas from WLAN module (select models only)
(5) USB cable from USB board (ZIF)
(6) Keyboard cable (ZIF)
Component replacement procedures 53
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