RAR archive for the Apple MacBook unibody model A1278, labelled with the M97 project code, Apple's internal name for that logic board design. At 1.27 MB it most likely holds a schematic set in PDF form, though the name does not list the contents. Technicians use such material to trace power rails, follow signal paths and find components when diagnosing a dead or shorted board. Check the 820- board number printed on the PCB before relying on it, since one model number covered several board revisions.
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.