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Removing the Logic Board
Previous steps required...
Opening the MacBook Pro
Removing the Top Case
Removing the Superdrive
Removing the Speaker Assembly
The logic board includes many compo-
nents. It includes the processor, the memory
slots, the video chipset, and temperature sen-
sors.
There are several connections that need to
be disconnected. As pictured in the top picture
to the right, you need to disconnect the iSight
cable, inverter cable, left fan, sound cable,
ExpressCard ribbon cable, battery cable, right
fan cable, display cable, PRAM battery, and the
two visible temperature sensors locating in the
top middle and one in the bottom right of the
board. There is one more temperature sensor
on the bottom right corner. You may need to
wait until the board is partially removed to
reach this cable.
There are ten small T6 screws scattered
around the board holding it in place. There are
also two long T6 screws holding the right fan to
the logic board. There is one Philips black
screw near the battery bay and one black T6
screw near the left fan.
After those screws are removed you should
be able to remove the board. It is best to tilt
back both fans and pull the board slightly left
and then out. Remember to disconnect that last
temperature sensor underneath the top right
corner if you did not do it earlier.
When putting the logic board back in, be
sure not to forget to reconnect all of these tem-
perature sensors or you can get system crashes
with overheating errors or possibly even dam-
aged components due to fans not working
properly.
[16]
STEP BY STEP
Logic Board Issues
The logic board is the
brain of your MacBook Pro.
There are several symptoms
of a bad logic board rang-
ing from overheating, dis-
play, and power issues.
Liquid spills tend to kill
logic boards fairly
quickly.
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