RAR archive of 2.27 MB for Apple board 820-2523, marked as revision C. The listing does not say what is inside, but packages of this size for Apple 820-series numbers usually hold a schematic PDF and sometimes a boardview. Check that the PCB silkscreen shows 820-2523 and the matching revision, since part placement and values can shift between revisions. Technicians use such material to trace rails, read the power sequence and pin down shorted capacitors with a multimeter or thermal camera.
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 (3)
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 | 28 Sept 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.