System board
To remove the system board, use these procedures and illustrations.
Table 6-12 System board descriptions and part numbers
Description Spare part number
System board (includes processor):
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating system
xxxxxx-601: Windows 10 operating system
AMD Ryzen 7 PRO 5850U M53483-xx1
AMD Ryzen 7 5800U M53480-xx1
AMD Ryzen 5 PRO 5650U M53482-xx1
AMD Ryzen 5 5600U M53479-xx1
AMD Ryzen 3 PRO 5450U M53481-xx1
AMD Ryzen 3 5400U M53478-xx1
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 32).
2. Remove the bottom cover (see Bottom cover on page 32).
3. Remove the battery (see Battery on page 42).
4. Remove the fan (see Fan on page 52).
When you replace the system board, be sure to remove the following components (as applicable) from the
defective system board and install them on the replacement system board:
● Memory modules (see Memory modules on page 33).
● WLAN module (see WLAN module on page 36).
● WWAN module (see WWAN module on page 37).
● Solid-state drive (see Solid-state drive on page 39).
● Heat sink (see Heat sink on page 53).
Remove the system board:
1
. Disconnect the following cables from the system board:
● Power connector cable
(1)
● Camera cable
(2)
● Antenna cables from the WWAN module (select products only) (3)
● Small USB cable from the USB board (4)
● Larger USB cable from the USB board (ZIF) (5)
● Speaker cable (6)
Component replacement procedures 55
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