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48 Chapter 3
18. Disconnect the main and aux wireless LAN antennae. (main: left/black, aux: right/gray)
19. Pop out the wireless LAN card.
20. Then take out the wireless LAN card.
21. Disconnect the cover switch cable from the main board.
22. Use a flat screwdriver as the picture shows to detach the upper case assembly.
23. Then detach the upper case carefully.