Maintenance and Service Guide

System board
NOTE: All system board spare part kits include replacement thermal material.
NOTE: System board appearance may vary.
1. Prepare the computer for disassembly (Preparation for disassembly on page 16).
2. Remove the access panel (Access panel on page 17).
3. In models with a hard drive, remove the hard drive (Hard drive on page 21) and drive cage Drive cage
on page 23.
4. In models with a discrete graphics processor, remove the graphics processor and heat sink assembly
(Graphics processor and heat sink assembly on page 24).
5. Remove the fan (Fan on page 36).
6. Remove the heat sink (Heat sink on page 37).
7. When replacing the system board, make sure the following components are removed from the defective
system board and installed on the replacement system board (as applicable):
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Memory modules (Memory modules on page 32)
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M.2 solid-state drive (M.2 PCIe solid state drive (SSD) on page 25)
●
Processor (Processor on page 39)
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WLAN module (WLAN module on page 27)
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Expansion connector board (Expansion connector board on page 31)
8. To remove the system board:
a. On models with a hard drive, disconnect the speaker cable from the system board (1), and then
remove the three Torx T15 screws (2) that secure the system board to the computer.
40 Chapter 4 Removal and replacement procedures