Small PDF of about 3 KB titled as a DC power supply amperage guide, indexed as a schematic but likely a reference sheet rather than a board diagram.

A PDF catalogued as a schematic but named only Troubleshooting, so the device, brand and board number cannot be identified from the name.

Troubleshooting guide in PDF for the Samsung Galaxy SM-A520F smartphone, chapter 7 of the service manual set, 1.93 MB.

Troubleshooting chapter 7 in PDF from the service documentation for the Samsung Galaxy SM-A510FD, the dual-SIM variant, 1.25 MB.

PDF titled troubleshooting, 1.56 MB, with no device, brand or model named in the file name, so its scope can only be known by opening it.

Disassembly and reassembly guide in PDF form, 1.11 MB, with no device or brand named in the file name.

Samsung service guide for the Galaxy SM-A320F, document revision 2.9, supplied as a 3.09 MB PDF.

Generic troubleshooting PDF of 1.39 MB whose name gives no brand, model or board, so the device it covers must be checked inside the document.

A 925 KB troubleshooting document in PDF, with a file name that does not say which device or manufacturer it belongs to.

Troubleshooting PDF, 3.16 MB, named without any brand, model or board reference, so it is uninformative until opened.

Full schematic set for the Apple iPad mini 2 logic board in a compact 879 KB PDF. Technicians rely on it to trace power rails, follow signal paths between the SoC, PMU…

Schematic for the Apple iPad Air 2 main logic board, a 10.6 MB PDF that originated from a Vietnamese repair site.

Apple iPad Air schematic in a 1.01 MB PDF, with no board number or variant given in the name.

Small 183 KB PDF for the Apple iPad 3, whose name suggests top and bottom views of the board, so it likely functions more as a component placement map than a full…

Diagram document for the Apple iPad 3, in a 1.50 MB PDF. The generic name offers no board number or revision, so check the title blocks for the logic board identifier.

Small 65.7 KB PDF for the Apple iPad 2 that, judging by the name, contains layout information rather than full circuit diagrams.

Schematic for the Apple iPad 2 logic board, saved as a 637 KB PDF. Repair technicians use such drawings to trace supply rails, check the charging and battery circuits…

Apple iPad schematic, 1.26 MB PDF, whose name says full schematic but does not specify the generation or board number.

Apple iPhone SE document in a 919 KB PDF whose Russian name means resistance measurement, so it most likely lists diode-mode or resistance readings for lines on the…

Schematic PDF of 1.87 MB named only SE, which most likely refers to the iPhone SE, though the name does not confirm the brand or generation.

Schematic of the main logic board for the iPhone 8 Plus, identified in the name by its D21 code, in a 1.91 MB PDF. MLB stands for main logic board.

Apple iPhone X schematic in PDF form covering two board numbers, 820-00863 revision 09 and 820-00869 revision 06, which correspond to the stacked logic board halves used…

PCB layout document for the Apple iPhone X covering both halves of its stacked logic board, 820-00863 revision 09 and 820-00864 revision 06, in a 1.12 MB PDF.

Schematic for the Apple iPhone X stacked logic board, combining 820-00863 revision 09 with 820-00864 revision 06, as a 2.89 MB PDF.

iPhone X schematic for the board pairing 820-00863 revision 09 with 820-00869 revision 06, a 2.84 MB PDF.

Apple iPhone 7 Plus logic board schematic in a 2.99 MB PDF. It is a key reference for tracing voltage rails, inspecting the audio codec, baseband and charging sections…

Apple iPhone 7 Plus logic board schematic in PDF form, covering board number 820-00229.

Complete schematic diagram for the Apple iPhone 7 in PDF format, about 2.1 MB. It covers the logic board circuits that board-level phone technicians work on, such as…

Schematic PDF for the iPhone 6S, identified in the name by the Apple project code N66. At about 1 MB it is a compact document, so check that it contains the full set of…

Apple iPhone 6 schematic diagram as a 3.96 MB PDF, bearing the name of a Vietnamese repair site in its title.

iPhone 6S Plus schematic supplied as a 6.5 MB PDF, with the name pointing to a Vietnamese mobile repair site as its source.

Full schematic set for the Apple iPhone 6 Plus, delivered as a PDF of about 1.5 MB. Phone repair technicians use these pages to trace supply rails from the PMIC, follow…

Apple iPhone 5S schematic for logic board 820-3292, revision A, a large 72.5 MB PDF. The 820- prefix is Apple's standard numbering for main logic boards, and the letter…

Large PDF schematic labelled 5C, which most likely refers to the Apple iPhone 5C, though the name itself gives no board number or revision.

PCB layout document in PDF for the Apple iPhone 5, showing component placement on the logic board.

Schematic in PDF for the Apple iPhone 5 logic board, about 8.6 MB, with no board revision stated in the name.

Schematic for the Apple iPhone 5, delivered as a larger 9.46 MB PDF that may include more pages or higher-resolution drawings than smaller copies.

Circuit schematic for the Apple iPhone 4S, identified in the name by its internal N94 model code, supplied as a 1.34 MB PDF.

Schematic in PDF form for the Apple iPhone 4, a compact 876 KB document. Logic board schematics like this one let a technician follow power rails from the battery…

Apple iPhone 3GS schematic, provided as an 8.92 MB PDF. The circuit drawings let repair staff follow the supply rails, check charging and backlight sections, and trace…