Small 120 KB RAR for the I/O board of an Apple MacBook with project code K78, schematic number 051-8925 at revision 400. LIO usually denotes the left I/O board, a separate daughterboard carrying ports, rather than the main logic board. Apple schematic numbers follow the 051-xxxx pattern shown in the drawing title block. A technician uses it to check connector pinouts, trace USB, audio or power lines through the flex cable and find failed components on the small board. Confirm the board matches before use.
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.