PDF schematic for the Apple A1181 MacBook, logic board 820-2279 at revision A. Apple's 820-xxxx numbering identifies the specific logic board, so the number printed on…

PDF schematic for LCFC board NM-F861, used in a Lenovo laptop. The NM-xxxx numbering belongs to LCFC, the Lenovo and Compal joint venture responsible for many Lenovo…

Schematic diagram in PDF form for the ASUS X453M and X453MA notebook mainboard, revision 2.0, about 1.43 MB.

Schematic PDF for the Dell T1700 motherboard, platform name Amazon MT, revision A00, with a 2013-01-29 date code in the title, about 2.30 MB.

Schematic PDF for Compal motherboard LA-K454P, revision 1.0, built on the AMD FP6 socket platform with a Cezanne-H processor and listing GN20P, which points to an NVIDIA…

Schematic for the Apple MacBook Air A2337, logic board X1757 with Apple part number 820-02016, revision 4.0.

Despite its schematic classification, the name indicates a PDF of the Baldor algebra textbook by Aurelio Baldor, 2017 Patria edition, a 68 MB mathematics book rather…

Spanish-language PDF from a master course in microelectronics, apparently part one of a series, about 904 KB.

Spanish microelectronics course in PDF form, 4.14 MB, without any specific device, brand or board named.

Spanish PDF on automotive electricity, 1.01 MB, apparently course notes from the Emagister learning community.

Small PDF, 376 KB, whose Spanish title means converters, with no device, brand or model in the name.

Spanish guide, 213 KB PDF, whose title translates as how to read Samsung firmware. No model or board is named, so it is a general how-to rather than a dump or schematic.

English PDF titled basic electronics, 583 KB, not tied to any device or board. It is reference and training material rather than a service schematic.

Spanish academic PDF of 1.65 MB: annex 1 of a 2019 master's thesis (TFM, MUPES teacher-training programme) on technology teaching units for the fourth year of ESO…

Working instruction document number 1304-4324 for a product designated F32, revision 4, as a 3.70 MB PDF.

Small Spanish PDF, 62.9 KB, numbered 121 in what looks like a circuit series, showing load switching with a relay driven by a transistor.

Part list document 1304-4322 for the F32, revision 2, provided as a 664 KB PDF. No manufacturer or device category appears in the name, so confirm the F32 designation on…

Spanish PDF, 474 KB, titled CDMA and FSK and numbered 5, apparently a chapter in a communications course.

Duplicate of the Spanish lesson on CDMA and FSK, numbered 5 and 474 KB in PDF format. It covers code division multiple access and frequency shift keying, two key…

Service notice, 118 KB PDF, dated or numbered 17_02, telling technicians to remove the camera protection tape when replacing a camera module.

Spanish PDF guide on using a soldering iron (cautín), 495 KB, with no device or model involved. It is training material for basic hand soldering rather than a schematic.

Portuguese PDF, 88.3 KB, on using a bench power supply (fonte de bancada), apparently converted from another document format. No device or model is referenced.

PDF document filed under schematics, titled only as unit two in Spanish (unidad 2), which suggests a chapter of a repair or electronics course rather than a board…

Portuguese-language PDF listing complete equivalences for SMD transistors, a cross-reference for identifying surface-mount parts by their marking code and finding…

English PDF on testing electronic components, filed under schematics but in practice a general reference rather than a circuit diagram for a particular board.

Spanish PDF titled as a course topic with the abbreviation A.I., whose meaning is not clear from the name alone, so the content should be checked by opening it.

Spanish training PDF on identifying the parts of a smartphone, describing the main components and modules found inside a typical handset.

Spanish-language course chapter on basic electronics, provided as an 817 KB PDF and apparently the same content as the numbered topic 2 of the series.

Spanish PDF course topic about diagnosing and fixing software faults on mobile devices, 541 KB in size and seemingly identical to topic 7 in the same series.

Topic 8 of a Spanish mobile repair course, covering backup, root and recovery on smartphones, supplied as a 306 KB PDF. No specific device is named.

Spanish course chapter numbered topic 7, dealing with diagnosis and repair of software faults in mobile phones; the 541 KB PDF matches the unnumbered copy of the same…

Topic 6 of a Spanish smartphone repair course, focused on diagnosing and solving hardware faults, in a 308 KB PDF. No model or board number is stated.

Spanish PDF numbered topic 5 on disassembling mobile terminals, roughly 954 KB, part of a phone repair training series. It does not name a specific handset.

Topic 4 of a Spanish mobile repair course, explaining how to identify the parts of a smartphone, as a 404 KB PDF identical in size to the unnumbered copy.