Apple logic board boardview for 820-01521, with the name tagging it PJJ MLB Pre-EVT2, so it reflects a pre-production engineering build rather than final shipping hardware. Apple numbers its logic boards with an 820- prefix, and the number etched on the board must match. Packed as a 115 KB zip, the layout opens in tools such as FlexBV or OpenBoardView for locating components, following nets and finding test points. Because it is pre-EVT data, expect possible differences from retail boards and verify parts before relying on it.
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 @cynetitsolution. Enginerys does not host this file.
All sources (7)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @cynetitsolution | 28 Feb 2024 | Open file on RM Schematics |
| @cynetitsolution | 12 Mar 2025 | Open file on RM Schematics |
| @cidschematicandboardviewofficial | 17 Mar 2025 | Open file on RM Schematics |
| @smschematics | 26 Sept 2025 | Open file on RM Schematics |
| @smschematics | 26 Sept 2025 | Open file on RM Schematics |
| @schematics_bios | 5 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 5 Aug 2026 | Open file on RM Schematics |
How to open a .zip file
Compressed archive that every operating system opens without extra software.