Small 89.7 KB ZIP for the Apple MacBook Air 13.3 inch model A1304, without a board number or document type stated in the name. Its size suggests a boardview or similar compact file rather than a full schematic, so open it to check. Material for this model supports locating components, test points and power rails while diagnosing no power or charging faults. Apple logic boards are identified by an 820-xxxx number printed on the PCB, and that number should match the documentation before you rely on it.
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 @Mac_Shematic_Santale. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.