Documentation for the Apple LIO board 820-2140, the left I/O daughterboard that typically carries external ports, compressed into a 444 KB RAR file. The name lists no schematic code or revision, so compare the 820 number on the PCB before use. When a USB, audio or other port on that side fails, such files help trace port power, protection components and the signals running across the interconnect to the logic board. Any RAR-capable archiver will unpack it, after which the contents can be checked against the hardware.
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 (4)
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 |
| @abgm_manutencao_esquemas | 25 May 2020 | 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.