Documentation for the Apple LIO board 820-2102, linked to schematic number 051-7226, in a 445 KB RAR archive. LIO usually refers to the left I/O daughterboard that carries external ports. No revision letter appears in the name, so match the 820 code on the PCB first. Such schematics let a technician trace port power, protection parts and the signals crossing to the logic board when a port fails. Any archiver that handles RAR, such as WinRAR or 7-Zip, will unpack it for inspection.
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.