PDF schematic for Apple logic board 820-01987 in a 1.72 MB RAR archive, a smaller package than another copy for the same board, so it may be a different edition or compression. The model name is not stated. Technicians use these diagrams to work out power sequencing, find which IC generates a missing rail and trace signal lines between chips. Open it in any PDF viewer, compare page content with the other copy if both are available, and confirm the 820 number on the logic board.
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 @schematicslaptop. 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 | |
|---|---|---|
| @schematicslaptop | 18 Aug 2022 | Open file on RM Schematics |
| @boardviewsandachematics | 2 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 4 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | 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.