Circuit diagram for the Lenovo ThinkPad R61 on the DAV3 GENBU5W board design, revision 5.13, in PDF form at about 1.28 MB.

Short 34.2 KB PDF for the 2SD2261, an NPN bipolar transistor from the 2SD family, catalogued as a schematic though the content should be a brief datasheet.

A 42.5 KB PDF describing the 2SK3293, listed among schematics but serving as a component datasheet.

The 2SK2843 is the only detail in this file name, an N-channel FET designation under the Japanese JIS scheme.

Datasheet PDF of 36.1 KB for the 2sk2572, filed under schematics although nothing in the name points to a board or appliance.

Named after part 2SK2218, this 213 KB PDF appears in the schematics section but is most likely the datasheet for an N-channel FET.

At 316 KB this 2SK2145 document is larger than most in the set, so it may hold extra characteristic curves or several package variants.

A 295 KB PDF on the 2SK1825 semiconductor. The 2SK prefix follows the JIS standard for N-channel FETs, suggesting a datasheet despite the schematic category.

Data for the 2SK1443 in a 110 KB PDF, indexed as a schematic though it is presumably the transistor's data sheet.

Covering the 2SD1246, this 85.2 KB PDF is filed among schematics but its name is simply a JIS transistor number.

Datasheet for the 2SC4214 transistor, supplied as a 279 KB PDF. The file name holds nothing beyond the part number, so the manufacturer, package and target equipment…

PDF of 336 KB covering the 2SC732TM, an NPN bipolar transistor of the Japanese 2SC family; the TM suffix appears in the name but is not explained.

Datasheet-style PDF of 181 KB for the 2SC5819 transistor, listed under schematics in the index.

Filed as a schematic, the 112 KB document 2SC5046 is really labelled with a Japanese NPN transistor part number, which suggests a single-component datasheet.

Filed under schematics, this 99.9 KB PDF is named for the 2SC3038 transistor and probably contains its datasheet.

Component reference for the 2SA1331 transistor, supplied as a 129 KB PDF. Under JIS conventions the 2SA prefix marks a PNP transistor designed for high-frequency…

Named after the transistor 2SA2059, this 183 KB PDF most likely holds that component's datasheet, despite the schematic category.

PDF, 250 KB, for the 2SA1255 PNP transistor, with 2SA being the Japanese JIS designation for that class.

2N4123 document carrying an RE suffix, provided as a 162 KB PDF and indexed in the schematic category.

Small 140 KB PDF whose name is simply the number 75005382, carrying no hint of manufacturer, device or component type.

This 126 KB PDF, tagged as a schematic, is named 440cmq030, with no brand or device identified.

A 114 KB PDF filed as a schematic and named 85eps08, with no brand or device given. The code looks like a power rectifier part number with a voltage-class suffix, though…

This 145 KB PDF, filed under schematics, carries the name 85epf08 and nothing about brand or board.

Schematic in PDF, about 420 KB, named only SEM2105, so the name does not identify a laptop model or board number.

Schematic PDF with the uninformative name M7V, 1.29 MB, carrying no brand, model or board number.

PDF document of about 2 MB titled as Lloyd service codes, indexed under schematics. The name does not state which Lloyd product or model it covers, so open it to check…

Schematic PDF labelled 7A-PRO, packed in a 637 KB RAR. The name gives no brand, board number or revision, so the device it covers must be confirmed by opening the file…

Toshiba Portege R830 schematic in a sizeable 19.9 MB PDF. The file name carries no board number or revision, so open it and compare the project and board markings with…

Small 91.1 KB PDF named sn608098, filed as a schematic. The name does not reveal the device; it may be a Texas Instruments component number, though that cannot be…

Schematic PDF of 1.6 MB named only Y300, which most likely refers to a Lenovo IdeaPad Y300-series device, though the name does not state the brand or board number.

Schematic in PDF form for a Lenovo IdeaPad Yoga laptop built on motherboard DA0LI5MB6H0, revision 1A.

Schematic in PDF form for mainboard 6050A2111701, revision A01, with a design date of 2007-03-27 in the title.

Schematic in PDF form for an Apple Mac mini logic board 820-3227, carrying the J50I designation in its name.

Schematic PDF covering the ASUS VivoBook 14 models X421EAY, X421EPY and X421EQY, about 7.65 MB.

Schematic in PDF form for the Compal LA-G521P laptop mainboard, revision 1A. Because the name names no laptop model, identify the machine by the board number…

Lenovo motherboard schematic for board NM-C661, supplied as a plain PDF of about 1.4 MB; the name gives no laptop model or revision.

Sony Vaio schematic in PDF format, labelled AK1 and attributed to Quanta, the ODM that built the board; file size is around 645 KB.

Schematic in PDF form for the Sony Vaio VJP132C11N, based on the Quanta MS8 project with motherboard number DA0MS8MBAD0.

Compal schematic in PDF form for board LA-J272P, with the platform code FDV42 in the name.

Lenovo schematic in PDF format for board I4X0MS, version 1.0, 1.96 MB. The name gives only the board code, so check it against the marking on the mainboard to identify…