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.

Training course material on basic electronics repair, 7.26 MB PDF, catalogued with schematics although it is an educational guide rather than a board diagram.

Board layout PDF of 968 KB labelled Note 4, with no brand stated in the name, so the exact phone it belongs to must be confirmed from the drawing itself.

Compal LS-8481P schematic in a 52.9 KB RAR archive. Unlike its siblings, the name states no revision, and no laptop model is mentioned either.

Schematic for the Compal LA-1252 laptop motherboard, revision R1A, in a 720 KB RAR archive.

PDF for the Samsung J5 Prime, 5.35 MB, with the brand name written in Persian in the file name.

Schematic PDF of 3.39 MB carrying only a team tag in its name. The name does not state the device, brand or board number, so check the title block inside before relying…

Circuit diagram for the W7J board, a 1.27 MB PDF with only the project code in its name and no brand or revision.

PDF technical document for the Intersil ISL9241, a buck-boost battery charger controller found in many laptops.

An 88.8 KB PDF describing the 2SD1806, filed in the schematic index although it is most likely a part datasheet.

PDF sheet of 38.4 KB for the 2SD2575, with an _E suffix in the file name. Filed as a schematic, it most likely holds datasheet content, because 2SD is the JIS code for…

The 3SK219 is covered by this compact PDF of roughly 30 KB, indexed as a schematic but by its name a part datasheet.

Reference sheet for the 2SK1529, a part number that follows the Japanese 2SK scheme used for N-channel FETs.

The 2SK1412 is a Japanese-registered N-channel MOSFET, and this 110 KB PDF is its reference document, catalogued as a schematic.

At 151 KB, this 2SK543 PDF is one of the larger sheets in the series, probably including detailed characteristic curves and package dimensions.

Covering the 2SK443, this 95.2 KB PDF sits under schematics, though the JIS 2SK naming for N-channel field-effect transistors indicates a component datasheet.

Compact 44.8 KB PDF for the 2SD1051, with an _E suffix in the name whose meaning is not stated, possibly a language or edition marker.

Documentation for the 2SC4730 transistor, supplied as a 142 KB PDF file. It sits in the schematic category, yet the 2SC designation under Japanese JIS numbering marks an…

A 206 KB PDF named only 2SC5148, filed with schematics but describing a single part. In the Japanese JIS system the 2SC prefix denotes an NPN bipolar transistor, so the…

Short 27.5 KB PDF for the 2SC3751 NPN transistor, the smallest file in this group, so it is probably a brief specification or summary sheet.

Datasheet-style PDF, 96.2 KB, named only for the 2SC3089 and catalogued as a schematic.

Small PDF document for the 2SA1524, filed under schematics but by its name a component data sheet for a discrete transistor.

UTC version of the 2SB772 documentation, a 22.5 KB PDF; UTC very likely stands for Unisonic Technologies.

Data sheet style PDF of 189 KB named 2n1792, listed under schematics. The lowercase name follows the JEDEC 2N pattern for discrete semiconductor devices, and no…

Part datasheet for the 2N5307, a 57.5 KB PDF classified as a schematic in this catalogue.

PDF datasheet for the 2N5306 transistor, 56.9 KB, with no manufacturer or revision stated in the name.

Small 26.3 KB PDF datasheet for the 2N5246 semiconductor device. The name only gives the part number, without manufacturer, package or revision.

The 1T404 code is all the name reveals about this 52.4 KB PDF, which is listed as a schematic. No device, maker or board number is stated.

A 52.5 KB PDF catalogued as a schematic and named after the part code 1T403. No equipment model, brand or revision is included.

Filed under schematics, 1T402 is a short PDF of 52.5 KB whose name holds only a component number. Nothing indicates which device or board it relates to.

PDF reference for the 1SS404 part, filed under schematics, though the 1SS numbering points to a Japanese small-signal diode and the file is probably its datasheet.

This 67.6 KB PDF, sorted under schematics, identifies itself only as 1SS300, with no laptop or board stated.

PDF datasheet, 76.4 KB, for the 1N5818, the 30 V grade of the familiar 1 A Schottky rectifier series.

PDF datasheet of 119 KB for the 1N5292 part, categorised as a schematic but in fact a component specification.

Only 34.2 KB, this PDF is named 1N957, a JEDEC 1N diode designation, and is better described as a component datasheet than a schematic.

Only the part code 245NQ015 appears in the name of this 94.4 KB PDF, suggesting a datasheet for a high current rectifier device rather than a circuit diagram.

The name 181rki carries no board or device model and resembles a power semiconductor part code, so this 173 KB PDF is best treated as a component datasheet although it…

Named 322CNQ and catalogued as a schematic, this 64.9 KB PDF contains no device or board details in its name.

Indexed as a schematic, this 103 KB PDF is named simply 70hf, giving no device model, board number or revision.

Listed under schematics, this 56.0 KB PDF carries only the short code 63cnq, without a full suffix, brand, model or board revision.