Archive for Apple 820-1970, described in the name as an LIO board, a small secondary board rather than the main logic board. At 415 KB it likely holds a short schematic covering this sub-board's connectors and circuits. It is useful for checking pinouts, tracing signals back to the main board and identifying components when ports or peripherals fail. No revision is stated, so check the 820 number on the PCB before using it. Open the RAR with WinRAR or 7-Zip.
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.