System board
1. Prepare the computer for disassembly (Preparation for disassembly on page 16).
2. Remove the display (see Display on page 18).
3. Remove the fan (see Fan on page 26).
4. Remove the heat sink (see Heat sink on page 33).
5. When replacing the system board, be sure that the following components are removed from the
defective system board and installed on the replacement system board:
● Memory modules (Memory on page 19)
● M.2 solid-state drive (Solid-state drive module on page 24)
● WLAN module (WLAN module on page 27)
6. Disconnect the following cables from the system board (as applicable):
(1) Camera module
(2) Power button/card reader board
(3) Left speaker
(4) Right speaker
(5) Optical drive (select products only)
(6) Hard drive (select products only)
(7) Hard drive (select products only)
7. Remove the seven Phillips screws (1) that secure the system board to the computer.
System board 35
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