System board
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating system
xxxxxx-601: Windows 10 operating system
Table 6-9
System board descriptions and part numbers
Intel Core i7-9750H processor and 6 GB of discrete graphics memory (GeForce GTX 1660 Ti)
L58846-xx1
Intel Core i7-9750H processor and 4 GB of discrete graphics memory (GeForce GTX 1650)
L58851-xx1
Intel Core i7-9750H processor and 3 GB of discrete graphics memory (GeForce GTX 1050)
L58849-xx1
Intel Core i5-9300H processor and 6 GB of discrete graphics memory (GeForce GTX 1660 Ti)
L58852-xx1
Intel Core i5-9300H processor and 4 GB of discrete graphics memory (GeForce GTX 1650)
L58850-xx1
Intel Core i5-9300H processor and 3 GB of discrete graphics memory (GeForce GTX 1050)
L58848-xx1
Before removing the system board, follow these steps:
1.
Prepare the computer for disassembly (
Preparation for disassembly on page 27
2.
Remove the bottom cover (see
3.
Remove the battery (see
).
4.
Remove the solid-state drive (see
Solid-state drive and Optane Memory Module on page 30
5.
Remove the vent covers (see
6.
Remove the fan shields (see
7.
Remove the fan/heat sink (see
Heat sink/fan assembly on page 43
).
Remove the system board:
1.
Disconnect the following cables from the system board:
(1) USB board cable (ZIF)
(2) Power connector cable
(3) WLAN module antennas
(4) Speaker cable
(5) Display cable (ZIF)
(6) Power button board cable (ZIF)
(7) Touchpad cable (ZIF)
(8) Keyboard cable (ZIF)
(9) Hard drive cable (ZIF)
48
Chapter 6 Removal and replacement procedures for authorized service provider parts