Apple board 820-2031 schematic archive with document number 051-7124 and revision L000, packed as a 1.44 MB RAR. A full schematic of this kind is the main reference for tracing power rails, reading enable and power-good chains and locating parts around a fault such as a shorted rail. Apple's convention pairs the 820- board number with an 051- schematic number, and the revision letter should agree with the board you have. Extract it with 7-Zip or WinRAR and check the PCB markings before relying on values.
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 @Mac_Shematic_Santale. 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 | |
|---|---|---|
| @Mac_Shematic_Santale | 5 Jul 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 2 May 2021 | 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.