PDF schematic for the Apple 820-2101 logic board under drawing number 051-7225, revision B000. This is one of several drawing numbers circulating for the same board, so details can vary between them. Technicians use the pages to trace power rails, check sequencing signals, read connector pinouts and confirm component values during board-level repair. Searching net names in a PDF viewer speeds diagnosis. Make sure the 820-2101 number printed on your board matches before relying on any value or layout detail here.
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 @alischematics. Enginerys does not host this file.
All sources (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @alischematics | 13 Sept 2021 | Open file on RM Schematics |
| @pepeelectronica | 28 Apr 2022 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 29 Apr 2025 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.