Removing the System Board
1.Follow the procedures in Before Working Inside Your Computer.
2.Remove:
a.battery
b.hard drive
c.keyboard
d.keyboard door
e.bottom cover
f.docking board
g.optical drive
h.memory module
i.GPU module
j.heatsink
k.ExpressCard
l.GPS module
m.WLAN card
n.WWAN card
o.SIM board
3.Disconnect the cables underneath the keyboard by pressing on the release tab and lifting it upward. [1,2]
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