A schematic diagram for Apple hardware. Shared as “APPLE IMAC A1150 M9 SYMPHONY EVT MLB - 051-7066 - REV 02.PDF” — a .pdf file, 220 KB.
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 @nityatechnology2020. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)