Apple iPad Air boardview, 214 KB, stored in the .bvr format used by several board viewing programs. The name identifies only the first-generation Air naming, without board number, revision or Wi-Fi or cellular distinction. With it loaded you can locate any capacitor, coil or IC on the logic board, follow a net across both sides and pick convenient probe points while diagnosing shorts or missing voltages. Verify the board markings against the layout before desoldering anything, since a wrong variant would place parts in different spots.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @GENERAL_SMART_PHONE_SCHEMATICS. Enginerys does not host this file.
How to open a .bvr file
Text boardview from the BoardView R family of tools, seen for Lenovo, MSI and Clevo boards.