Dell G15 5520-4132 Service Manual page 40

NOTE: After removing the screws, lift the system board from the top left and right sides of the heat sink. Ensure the
connectors are released from the ports and pins on the left and right sides of your computer.
NOTE: Place the system board on a clean and flat surface.
CAUTION: Do not lift the system-board assembly holding the USB board, I/O board, or the bottom side of the
system board.
15. After performing all the above steps, lift the system board off the palm-rest and keyboard assembly along with the I/O
board, USB board, and fan and heat-sink assembly.
16. Turn the system board over and remove
17. After performing all the above steps, you are left with system board.
40 Removing and installing components
I/O board, USB board, and fan and heat-sink assembly.