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.

Full schematic for the Apple A2159 MacBook Pro, logic board 820-01598, provided as a 23.9 MB PDF.

Apple MacBook logic board schematic, board number 820-00281, MLB project Baffin with X363G code and A1707 model, 2.14 MB PDF.

Apple schematic for logic board 820-01987, provided as a PDF; related files tie this board to the A2289 MacBook Pro.