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 operating system
Table 5-15 System board descriptions and part numbers
Description Spare part number
System board for use in models with discrete graphics memory:
● Intel Core i7-8565U processor and 2 GB GeForce MX250 graphics memory L51138-xx1
● Intel Core i5-8265U processor and 2 GB GeForce MX130 graphics memory L51137-xx1
● Intel Core i3-8145U processor and 2 GB GeForce MX130 graphics memory L51136-xx1
System board for use in models with UMA graphics memory:
● Intel Core i7-8565U processor L51134-xx1
● Intel Core i5-8265U processor L51133-xx1
● Intel Core i3-8145U processor L51132-xx1
● Pentium N5000 processor L51135-xx1
Thermal pad, for use in models with discrete graphics memory L21302-001
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 (see Bottom cover and Rubber Foot Kit on page 31).
3. Remove the battery (see Battery on page 34).
4. Remove the WLAN module (see WLAN module on page 35).
5. Remove the solid-state drive (see Solid-state drive on page 40).
6. Remove the USB/audio board (see USB/audio board on page 54).
Remove the system board:
1. Disconnect the following cables from the system board:
(1) Power connector cable
(2) Webcam (CCD) cable (ZIF)
(3) WLAN module antennas
(4) Speaker cable
(5) Display cable (ZIF)
(6) Power button board cable (ZIF)
(7) Keyboard cable (ZIF)
56 Chapter 5 Removal and replacement procedures for authorized service provider parts
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