Follow this guide to remove or replace the logic board in a Wi-Fi only iPad Air 3. The cellular model will require disconnecting the upper cellular.. Apple iPad iPad Air 3rd Gen (A2152 / Wi-Fi Only), Logic board BoardView* file and Schematic diagram
Holding the logic board by the side nearest the dock connector, carefully pull the logic board toward the bottom of the iPad. Flip the logic board over, minding any cables that may get caught.. All diagrams are presented either in PDF format or packed in a RAR archive (where, in addition to the diagrams, there is also a lot of useful information on pinouts, as well as photographs of real iPad boards).