Apple MacBook archive tagged M42B, an Apple internal project code, packed as a 1.27 MB RAR file. The name does not give the A-model or 820- logic board number, so look inside to see whether it holds a schematic, a boardview or both. Material like this lets a technician trace the power-up sequence, check the SMC and charger sections and pin down shorted rails. Before using any values, compare the board number and revision in the title block with the markings silkscreened on the logic board in front of you.
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.