Documentation for the Apple 820-2299 audio board, a separate small board for the audio circuit, packed into a 140 KB RAR. No revision is stated, so compare against the marking on the PCB. Expect a short schematic covering the audio section. Use it to follow the codec or amplifier supply, trace headphone, speaker and line jacks, and check the connector or cable to the main board when sound is missing, distorted or a jack is not detected.
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.