Table 5-13 System board descriptions and part numbers
Description Spare part number
System board (includes integrated processor)
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating systems
xxxxxx-601: Windows operating system
System board for use in models with discrete graphics
● Intel Core i7-1185G7 processor M21690-xx1
● Intel Core i7-1165G7 processor M21692-xx1
● Intel Core i5-1135G7 processor M21688-xx1
● Intel Core i3-1115G4 processor M21684-xx1
System board for use in models with UMA graphics
● Intel Core i7-1185G7 processor M21706-xx1
● Intel Core i7-1165G7 processor M21708-xx1
● Intel Core i5-1135G7 processor M21702-xx1
● Intel Core i5-1135G7 processor (WWAN models) M21704-xx1
● Intel Core i3-1115G4 processor M21696-xx1
● Intel Core i3-1115G4 processor (WWAN models) M21698-xx1
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 30).
2. Remove the bottom cover (Bottom cover on page 30).
3. Remove the battery (see Battery on page 31).
4. Remove the fan (see Fan on page 41).
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 34).
● WWAN module (see WWAN module on page 36).
● Solid-state drive (see Solid-state drive on page 38).
● Heat sink (see Heat sink on page 43).
Remove the system board:
1. Disconnect the following cables from the system board:
● Antenna cables from the WLAN module (select products only) (1)
● Power connector cable (2)
46 Chapter 5 Removal and replacement procedures for authorized service provider parts
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