A schematic diagram for Apple hardware (board 820-3476, 820-3536, 820-4924). Shared as “A1502 820-3476-A 820-3536通用 820-4924可参考.pdf” — a .pdf file, 1.39 MB.
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 @ShareMan_Electronic_Files. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.
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