Apple logic board boardview for 820-01521, with the internal code PJJ noted, from the Pre-EVT2 engineering stage. It comes as a .BRD file inside a 140 KB RAR. Apple marks logic boards with 820-xxxxx part numbers, and you should read that number off the PCB before use. Pre-EVT builds are early prototypes, so some parts or nets may differ from retail boards. The BRD layout opens in OpenBoardView or FlexBV, letting you locate components and test points and trace power rails. Cross-check it against the matching schematic.
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 (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 17 Feb 2024 | Open file on RM Schematics |
| @LaptopsBoardview | 19 Jul 2024 | Open file on RM Schematics |
| @generalschematics | 19 Oct 2024 | 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.