Schematic for the Apple 820-2494-A logic board, provided in PDF form in a 1.80 MB RAR. The name lists only the board number; Apple stamps these 820-series codes on the…

Power sequence document for Apple logic board 820-01598, a 241 KB PDF. Apple uses the 820-xxxxx format for its logic board part numbers, printed on the PCB itself.

Power sequence diagram for Apple logic board 820-01055, provided as a 215 KB PDF. The 820 prefix is Apple's own board numbering, visible on the PCB.

Component placement drawing for Apple logic board 820-01055, a 228 KB PDF. Placement sheets map reference designators to physical locations, so you can find a capacitor…

Power sequencing diagram for Apple MLB 820-01598, project code J213, in a compact 72.2 KB PDF; the LO suffix likely denotes a reduced-quality version.

Apple logic board schematic for board 820-02016, revision 07, in a 6.52 MB PDF. The name itself gives only the board number, which follows Apple's 820- numbering for…

PDF schematic of Apple logic board 820-02016, revision 07, size 6.52 MB, identified only by its board number in Apple's 820- series.

Apple schematic for the A2179 MacBook Air, logic board 820-01958, with X1783 noted in the name, likely the internal project code.

Apple schematic for logic board 820-00939-A, project code J174, packed as a RAR archive holding the PDF drawing set.

Apple schematic in PDF form for logic board 820-00939, project J174, delivered inside a 2.91 MB RAR.

Schematic for the Apple MacBook A1278 logic board 820-2936, revision B, carrying the K90i project code, packed as a PDF in a 1.69 MB RAR archive.