Apple logic board archive for project J113, board number 820-00165-A with revision A, stored as a 125 KB zip. Newer Apple boards use the five-digit 820-0xxxx numbering, and J-codes are internal project identifiers. The compact size points to a boardview file rather than a full schematic set, though contents should be verified. Boardviews open in viewers like OpenBoardView or FlexBV and help locate components, test points and nets. Confirm the 820 number etched on your board before relying on the data.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.