Table 5-12
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
Models with UMA graphics memory:
Intel Core 7-1255U
N20294-xxx
Intel Core i5-1235U
N20293-xxx
Intel Core i3-1215U
N20292-xxx
Models with discrete graphics memory:
Intel Core i7-1255U with NVIDIA GeForce MX550 graphics adapter
N20296-xxx
Intel Core i5-1235U with NVIDIA GeForce MX550 graphics adapter
N20295-xxx
Before removing the system board, follow these steps:
1.
Prepare the computer for disassembly (see
Preparation for disassembly on page 30
2.
Remove the bottom cover (see
Bottom cover and rubber feet on page 30
3.
Remove the battery (see
4.
Remove the solid-state drive (see
5.
Remove the memory modules (see
6.
Remove the WLAN module (see
7.
Remove the fan (see
NOTE:
You do not have to remove the heat sink to remove the system board.
Remove the system board:
1.
Disconnect the following cables from the system board:
●
Power connector cable (1)
●
Left fan cable (2)
●
Display cable (ZIF) (3)
●
Speaker cable (4)
●
Keyboard cable (ZIF) (5)
●
Backlight cable (ZIF) (6) (select products only)
●
Touchpad board (ZIF) (7)
●
Hard drive cable (ZIF) (8)
System board
47