RAR archive of 221 KB for Apple board 820-2282, labelled LEFT ALS. ALS commonly stands for ambient light sensor, so this likely covers the small left sensor board rather than a logic board. No revision is stated, so check the marking on the part. Expect a short schematic or layout file. Use it to check the sensor supply, follow its data lines to the main board connector and test continuity when automatic brightness or keyboard backlight control misbehaves.
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.