Datasheet-type PDF, 58.1 KB, bearing the part number 2SC4027 and stored under schematics. Under the Japanese JIS scheme the 2SC prefix means an NPN bipolar transistor.

Named for the 2SC5318, this 127 KB PDF is filed as a schematic but reads as a component datasheet title.

PDF datasheet for the 2SB1288, 41.4 KB, with an E suffix in the name that most likely marks an English-language edition.

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.

Listed under schematics, this 116 KB PDF is named 85hf and says nothing about brand, board or revision.

Zip archive of about 963 KB holding a schematic labelled J415F, a model code matching the Samsung Galaxy J4+ family, though no brand is given in the metadata.

Learn Arduino, a Spanish guide in a 5.69 MB PDF focused on the Arduino microcontroller platform rather than repair of a specific device.

Schematic for the Dell Vostro 3400 laptop, compressed as a RAR of about 1.07 MB. The name provides no ODM board number, revision or graphics variant, so check the title…

PDF document of about 1.39 MB for the bq24780S, a Texas Instruments part, as the TI suffix in the name indicates.

Quanta schematic in PDF for the QK1 platform, revision A, board number DA0QK1MB6I0, delivered as a RAR archive of about 3 MB.

Schematic drawings for the early revision 1.0B of the Gigabyte GA-EP43-UD3L desktop motherboard, supplied as a PDF inside a RAR of about 1.32 MB.

Unlabeled schematic PDF of about 1.19 MB; the file name is a coded string with no model, maker or board reference.

Gigabyte GA-F2A88X-D3H schematic for revision 3.0 in a compact PDF archive of about 129 KB, so it may be a partial set.

Circuit schematic for the Quanta BQ2L laptop board, revision 1A, as a 1.20 MB PDF. The name gives the Quanta project code and revision but nothing about the retail model…

Short PDF of 101 KB about Ohm's law, in Portuguese and associated with BettineCell by its name, rather than a schematic of any specific device.

PDF schematic for an active subwoofer project designated PSW500, a 284 KB document credited to Rat Net, whose name describes it in Spanish as an active subwoofer.

PDF schematic of about 979 KB carrying only the code KL2D, with no brand, model or board number given.

Persian-language PDF whose title translates roughly as how to test electronic components.

Short Persian PDF of about 70.4 KB whose title translates as how to test a charging circuit.

Schematic PDF for the ASUS GX502GX gaming laptop, with the name also referencing GX502 and GU502 models, compressed as a RAR of about 14 MB.

PDF schematic of the HT-S40R home theatre system, about 1.50 MB, the name carries no board number or revision.

Wistron board 17510-2 reference in PDF, about 6.3 MB, labelled as a boardview. A PDF layout of this kind opens in any PDF reader and lets you search designators to find…

English-language PDF about DC-to-DC regulators, 3.13 MB, filed with schematics. The name carries a numeric code but no specific IC or board, so it reads as a general…

Small 120 KB PDF that, judging by its Persian title, is a saved Wikipedia encyclopedia article about inverters rather than a board-level schematic.

Schematic for the Lenovo board NM-A191, numbered in the LCFC pattern, packed as a PDF inside a RAR of about 1 MB.

PDF schematic for MSI G41M-P23 desktop motherboard MS-7592, revision 2.0, in a RAR of about 1.20 MB.

Schematic PDF for the Lenovo IdeaPad 720S, board NM-B441, in a RAR archive of about 1.7 MB.

Samsung schematic in PDF for the RV411 laptop, board number BA41-01425A, about 895 KB. BA41 is the prefix Samsung uses for its motherboard part numbers.

Schematic for MSI board MS-7290, archived in RAR format at about 1.06 MB. Only the board number is given, without revision or chipset, so verify the PCB silkscreen…

Short PDF of 161 KB with the numeric name 317091 and a browser copy marker, offering no information about the device, brand or board.

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

Generic-titled LG laptop motherboard schematic in PDF form, 2.64 MB. The name gives no model, board number or revision, so open the title block to identify the exact…

Schematic in PDF format for the Lenovo ThinkPad SL410, about 1 MB in size. The file name does not state a board number, ODM or revision, so compare the diagram with…

Schematic diagram for the HP Compaq Presario CQ20 laptop, a compact PDF of about 600 KB.

Revision 0.2 schematic for the Compal LA-5671P board, packed as a RAR of about 372 KB. Compal assigns LA numbers to the motherboards it manufactures for different…

PDF document about a broadcasting system, 402 KB, catalogued as a schematic. Apart from that topic the file name gives no model, brand or board number, so its exact…

PDF schematic for the Samsung SM-A720F, about 3.58 MB, with no board revision indicated in the name.

Schematic in PDF for the Gigabyte GA-P55-US3L motherboard, revision 2.02, about 1.9 MB.

PDF schematic for the ASUS X453MA laptop mainboard, about 1.43 MB, with an RG suffix in the name whose meaning is not stated.

Schematic for an early Sony VAIO mainboard labelled MBX-80, with NE5 apparently the project code and 3E the board revision.