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…

Reference archive on diagnosing and locating faults behind iPhone restart problems, such as boot loops and random reboots.

iPhone 11 reference archive listing important supply resistance values for the BB side, which in repair notation usually means the baseband board section.

Archive of important supply resistance values for the iPhone 11, covering the AP side, commonly the application processor section of the stacked logic board.

Resistance table for the connecting base of the iPhone 11, supplied as a RAR archive. It most likely covers the interposer or connectors that join the two halves of the…

Apple logic board firmware for board 820-00138, labelled as a working, fully tested BIOS dump, packed in an 8.68 MB RAR archive.

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.

Firmware image for the Apple logic board 820-2542-A, a raw 4 MB binary dump of the boot ROM.

Repair archive for the Apple MacBook Pro 13 inch 2020, model A2251, logic board 820-01949, packed as a 5.26 MB RAR file.

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 firmware dump from an A2289 MacBook Pro, logic board 820-01987 revision 06, read from the chip at position U2890.

Small ZIP archive of about 109 KB tied to the Apple logic board number 820-01124; the name gives no model, document type or revision, so the contents must be inspected…

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.

Boardview for the Apple MacBook Pro 15-inch Retina A1398, EMC 2910, logic board 820-00426, compressed in a RAR archive.

RAR archive for an Apple Mac with board code J113 and logic board number 820-00165, revision A.

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

Apple logic board archive for board 820-2936, a RAR of about 2.70 MB; the lb prefix stands for logic board.

Boardview for the Apple logic board 820-2532, supplied as a RAR archive of 1.10 MB. Apple identifies its boards with 820-xxxx part numbers silkscreened on the PCB, and…