Apple 820-02841 logic board schematic, a PDF compressed into a RAR archive of about 3.77 MB; the same board also has an uncompressed PDF listed separately. The 820-xxxxx number is Apple's logic board part number and should match the marking on the PCB. No Mac model is named in the file. Use the diagram to follow power rails and enable signals, check component reference values, trace connector pinouts and diagnose no-power or no-boot faults alongside a boardview when available.
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 @schematicslaptop. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 16 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 27 Oct 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.