A small 51.5 KB PDF carrying the part number 2sc5147, catalogued as a schematic but almost certainly a component datasheet for that NPN transistor.

Catalogued as a schematic, this 240 KB PDF carries only the part number 2SC4200 in its name, which points to a component datasheet rather than a board diagram.

Reference sheet in PDF form, 29.3 KB, for the part numbered 2SC5689. Although listed as a schematic, a name made of only a JIS transistor code points to a manufacturer…

Here is a 42.1 KB PDF on the 2SC3707 transistor, listed in the schematic category. The trailing E after the part number is not explained in the name and should be read…

Small 37.0 KB PDF for the 2SB1427 transistor; the name gives only the part number, with no maker or revision.

Brief 41.1 KB PDF for the 2SA921, with an _E suffix in the name that likely marks an English-language edition, though that is not certain.

This PDF of 71.0 KB is indexed as a schematic for the 2N6520, a JEDEC 2N-series discrete semiconductor number.

Covering the 6A05 to 6A10 series, this 198 KB PDF appears to be a datasheet for a family of 6 A rectifier diodes rather than a device schematic.

Filed as a schematic, this 531 KB PDF carries only the bare number 28040 in its name, with no manufacturer, device model or revision stated.

At only 53.7 KB, this PDF named 85hq is listed as a schematic and carries no brand or board information.

A small PDF of 54 KB, catalogued as a schematic and named only with the short code 75hq.

Only the code 35sgq060 is given for this 47.7 KB PDF, which is categorised as a schematic.

A 41.4 KB PDF named 35sgq045 and filed under schematics, though the name points to a component part code rather than a motherboard.

Bearing only the code 35cgq045, this 49 KB PDF sits among schematics but looks like a reference for a single component rather than a board.

A 61.7 KB PDF named 34WC02, filed with schematics. The name resembles a component part number and gives no laptop model, brand or board revision.

At only 23.6 KB, this PDF named 30WQ04FX is probably a brief datasheet or ordering note for a discrete rectifier, despite being indexed as a schematic.

A small PDF filed as a schematic, named only 30FQ, which reads like a component part number rather than a board or laptop model.

A 312 KB PDF covering the 24LC21 serial EEPROM, with the -1 suffix probably marking a separate edition or part one of the documentation.

A 329 KB PDF datasheet for the 24AA52 and 24LCS52 serial EEPROMs, small 2 Kbit I2C memories.

Catalogued as a schematic, this 314 KB PDF carries only the code 22GQ100 in its name, with no laptop brand, board number or revision stated.

Lenovo ThinkPad L412 motherboard schematic for board DA0GC9MB8D0, revision D, supplied as a 1.12 MB PDF. The DA0...MB...

Acer Aspire V5-551G motherboard schematic for board DA0ZRPMB6C0, delivered as a 1.03 MB PDF. The DA0...MB...

Schematic document for a Z62HA mainboard, delivered as a 1.15 MB PDF. The name carries no brand, platform or revision information, only the board code with its HA…

Sony VAIO laptop schematic for the MBX-266 motherboard, provided as a 1.13 MB PDF. MBX numbers are Sony's own designations for VAIO mainboards, while the actual board…

PDF schematic, 1.02 MB, whose name points to the Sony VAIO board MBX-247; the trailing hk1 token is not explained by the name and may denote a variant or build.

PDF schematic for the Lenovo ThinkPad X200 laptop, about 1.23 MB. The name gives no motherboard number or revision, so compare the board code on the opening pages with…

Motherboard schematic for the IBM ThinkPad T42, a 1.08 MB PDF. The file name lists no board number, revision or GPU option, so verify the version against the labels on…

Schematic in PDF form for an H61MXL-K desktop motherboard, compressed into a RAR archive of about 1.10 MB.

Compact zip archive of 1.10 MB holding a schematic, named only with the model code x6812 and listed under Tecno and Infinix.

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…

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.

Schematic archive for the J610F, most likely the Samsung Galaxy J6+ model code, though the brand is not stated in the name.

Rear 5MP ultrawide camera schematic for the Samsung SM-A23, provided as a 2.79 MB PDF. The drawing covers the ultrawide module connector, its data and control lines and…

Samsung SM-A20S schematic section dedicated to the LCD backlight, 4.62 MB PDF. It covers the backlight driver circuit, its boost coil, diode and capacitors, and the…

Samsung SM-A05 charging and data schematic, a 6.28 MB PDF. It covers the USB connector, the charger and power management parts, VBUS protection and the data lines to the…

Lenovo IQ3X0IL document for LCFC board NM-B511 revision 1.0, named as a boardview but stored as a small PDF, so it is probably a printed component placement view rather…

Schematic in PDF form for Inventec motherboard 6050A3087502, revision MB-A03, 2.75 MB. Inventec's 6050A numbering is common on HP notebook boards, though the name gives…

Schematic in PDF form for a Sony laptop motherboard with the Quanta code DA0HK9MB6D0, revision 1A.

Block diagram and layout document for the Samsung SM-S901U, dated 220203, stored as a 3.41 MB PDF.

Schematic in PDF form for the Toshiba Satellite 1200 notebook. The file name gives only the model, with no motherboard number or revision, so compare the board markings…