A signal from the keyboard travels into the trackpad (red arrow), after that it travels through the trackpad circuit board (green arrow) and eventually goes into the logic board though the trackpad cable (yellow arrow). In a Macbook Air the keyboard is not connected directly into the logic board. In order to troubleshoot a problem like that you have to understand how the signal goes from the keyboard and trackpad into the logic board. I didn’t find any water damage on the logic board. Pay attention during the reassembly process. For removing the battery you will need a T5 Torx screwdriver.Īgain, three screws I marked with green circles are longer than two other screws. Two screws I marked with green circles are longer than other eight screws.Īfter removing the bottom cover I disconnected and removed the battery to take a closer look at the trackpad area.
For removing the bottom cover you will need a special P5 Pentalobe screwdriver. First of all, I removed the bottom cover to do visual inspection of the internal laptop components.
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