Wistron motherboard schematic for the DOH50 project, ULT hardware build, board 12311-1, marked A00 with a 0628 date code.

Schematic in PDF form for the HP Pavilion 15, drawn on Quanta board DAY16EMB8C0, project code Y16E.

Spanish PDF titled Microelectrónica, 4.14 MB, with no device, brand or board named. It is likely training or course material covering microelectronics topics such as…

2.1 amplifier schematic built around the TDA7294, by Technical Mriganka, in a 219 KB PDF.

Modified 2.1 channel amplifier schematic, a 90.6 KB PDF; the title does not say which original design was altered or which ICs are used.

Schematic for the Quanta SW1 notebook motherboard, delivered as a 1.08 MB PDF. Only the project code is given, with no revision, brand or model, so compare the title…

PDF schematic titled simply 4kw, most likely a high-power audio amplifier rated around 4 kilowatts.

Quanta R62 laptop mainboard schematic in PDF, with a 1022 tag that likely marks a date or build.

Tone control circuit intended for a 2.1 channel audio system, in a 159 KB PDF. It shows the bass and treble adjustment network that sits between the source or preamp and…

Speaker protection circuit for a 2.1 audio setup, a user-drawn design in a 139 KB PDF. Such boards normally delay relay engagement at power-up to stop thumps and…

Schematic of a 2.1 channel amplifier based on the TDA2030A, from Technical Mriganka, in a 416 KB PDF.

2.1 amplifier schematic attributed to Amiru, a compact 98.7 KB PDF. The name gives no details about the ICs or power level, so the diagram itself must be read for…

Technical Mriganka 2.1 amplifier design using the TDA7379 and TDA7377 power amplifier ICs, a 206 KB PDF.

Schematic PDF for Quanta board DA0R05MB8D2, project code R05, at revision D. DA0xxxMBxxx numbers belong to Quanta, an ODM that builds boards for several laptop brands…

Very large 70.9 MB PDF for the LG 32LF500B LED television. Given its size it is likely a full service manual with schematics, board layouts and exploded views, though…

Schematic in PDF form for Inventec motherboard 6050A2509701, revision A02, packed in a 983 KB RAR.

Spanish microelectronics course in PDF form, 4.14 MB, without any specific device, brand or board named.

Scanned PDF of the September 2006 issue of AudioXpress, the audio electronics magazine, filed here under schematics.

Copper-side PCB artwork for the Apex AX 20 amplifier project, a 208 KB PDF showing the track pattern rather than a circuit diagram.

2.1 channel hi-fi audio amplifier circuit by Technical Mriganka, a 164 KB PDF. The title does not name the amplifier ICs or output devices, so identify them from the…

Class H power supply schematic, version 0.2, fuse type, marked final, in a 1.39 MB PDF.

PDF schematic for a design named SoniaH_2 with board number 16502-1, which follows the Wistron numbering pattern.

Very early R0.1 schematic for the Compal LA-6758P motherboard, stored as a 1.45 MB RAR archive.

PDF schematic for Compal motherboard LA-G714P. The name does not mention the laptop brand, model or revision.

Schematic PDF, 9.66 MB, identified only by board number 17870-1, which follows the Wistron numbering pattern; the name gives no laptop model.

Schematic PDF for the Quanta V08 project, motherboard DA0V08MB6D4, compressed into a 1.40 MB RAR archive.

Quanta board schematic for DA0U33MB6E1, revision E, in PDF format. The name gives no laptop brand or model.

Laptop mainboard schematic for the Quanta TE1 design, provided as a 720 KB PDF with no revision or retail model in its name.

PDF schematic in a RAR archive for the ECS R40IIX laptop mainboard, with the ECS part number 37GR40100-10.

Yamaha PA 2400 amplifier schematic in a small 194 KB PDF. The name gives no revision or note about modifications, so it may represent the standard circuit, but confirm…

Schematic PDF for the board codenamed Bandit, number 6050A2514101-MB-A01, PV build dated 20120905. The 9470m in the name points to the HP EliteBook Folio 9470m.

ThinkPad T60 schematic in a 1.63 MB PDF, with GM in the name most likely pointing to the 945GM chipset build with integrated graphics; no revision is stated.

PDF circuit diagram, 837 KB, for the Compal LA-5752P board, marked with a (1) copy suffix and probably the same as the other LA-5752P files.

Quanta 0P5H schematic in PDF format, board number DA0P5HMB8J0, archived in a 1.18 MB ZIP.

Compal LA-9331P schematic, revision X00, provided as a PDF in a RAR archive. The name gives no laptop brand or model, only the Compal board number, which follows the…

Schematic in PDF form for board 6050A2170201-MB-A03, packed in an 853 KB RAR archive; the laptop model is not named.

Schematic for Quanta G3AE motherboard DAG3AEMBCD0, packed as PDF in a 3.43 MB RAR. Quanta is an ODM building boards for several laptop brands, and the DA prefix with MB…

Top-side print for a universal dos vas Matrix board, likely a dual voltage-amplifier-stage module, marked langsung print, meaning ready to print directly.

Schematic in PDF form for a tone control board labelled NEWGEN TA2411B, where TC most likely stands for tone control.

Very small PDF schematic named only 4kw2, probably a second sheet or variant of a 4 kW power amplifier design, though the name gives no further detail.