Apple logic board 820-2101 schematic supplied as a PDF, drawing 051-7492 at revision B000. Apple often issues more than one 051- drawing number for the same 820- board, so this copy may reflect a different build variant than others for 820-2101. A technician uses it to read rail names, follow signals between the PMIC, CPU and connectors and look up resistor or capacitor values when replacing parts. Verify the board number on the PCB, and ideally cross-check with a matching boardview, before measuring or replacing anything.
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 (3)
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 |
| @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.