Apple A1278 MacBook Pro schematic for logic board 820-2936, revision B, with the K90i project code noted in the name. Apple uses 820-numbers stamped on the board, and because A1278 covers several board versions, confirm the number and revision before working from it. Use this 1.80 MB PDF to trace PP-named rails, follow the SMC power-on sequence, locate components and test points and isolate shorts on the main supplies. Any PDF viewer opens it, and searching net names makes signal tracing quick.
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 @abgm_manutencao_esquemas. Enginerys does not host this file.
All sources (11)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @abgm_manutencao_esquemas | 15 Jul 2020 | Open file on RM Schematics |
| @LaptopsBoardview | 15 Jan 2021 | Open file on RM Schematics |
| @hrtechno | 23 Jul 2021 | Open file on RM Schematics |
| @pepeelectronica | 21 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 12 Oct 2022 | Open file on RM Schematics |
| @generalschematics | 19 Oct 2024 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 27 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
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