Spanish basic electronics guide, a general introduction rather than a schematic for any specific equipment. The name gives no device or board number.

Spanish-language PDF course on basic electronics for mobile phones, filed under schematics but in practice a training document rather than a diagram for one model.

Topic 2 of a Spanish smartphone repair course, covering basic electronics, as an 817 KB PDF that appears to duplicate the unnumbered copy. No device or board is named.

English PDF titled basic electronics, 583 KB, not tied to any device or board. It is reference and training material rather than a service schematic.

Basic electronics material in Spanish, with the word electronics misspelled in the name.

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.

Basic electronics course in PDF form attributed to Humphrey Kimathi, 4.45 MB, filed under schematics but in practice a learning text.

A PDF collection of fun basic electronic projects, filed under schematics and 406 KB in size.

Portuguese-language handout on basic electronics, filed under schematics although the name points to a study booklet rather than a circuit diagram of a specific device.

Opening topic 1 of a Spanish course on mobile telephony fundamentals, a 343 KB PDF. No phone model or brand appears in the name.

Spanish notes on basic electronics, a 591 KB PDF. The name mentions no device, board or brand, so it serves as study material on fundamentals such as electrical…

Basic electronics primer in English, a 2.66 MB PDF catalogued with schematics though it is a learning text rather than a circuit for a product. No device is named.

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.

Large Spanish course PDF, 15.6 MB, on basic electronics applied to mobile device repair.

PDF for the Huawei Y5II (CUN model code). Although it is filed as a schematic, the name describes it as a quick start guide, written in Spanish.

PDF documentation for the 2SD1090 transistor, 198 KB, catalogued under schematics though the name indicates a component datasheet.

This 28.6 KB PDF carries the part number 2SC4635LS, apparently a package or lead-form variant of the 2SC4635 NPN transistor.

At 188 KB, this PDF for the 2SC5466 is larger than a basic sheet and likely includes full characteristic curves and package drawings.

Datasheet PDF, 73.5 KB, for the 2SB1405. The name states just the part number, without manufacturer or edition.

Spanish PDF guide on using a soldering iron (cautín), 495 KB, with no device or model involved. It is training material for basic hand soldering rather than a schematic.

Persian PDF titled mobile repair, about 294 KB in size and catalogued as a schematic. The name gives no phone model or board number, so it is most likely a general guide…

Only the part number 2SK2221 names this small 55 KB PDF, which is catalogued as a schematic but most likely serves as a component datasheet.

Compact 39.7 KB PDF named 2sc4849, written in lowercase but following the Japanese JIS pattern where 2SC denotes an NPN transistor.

First chapter of a Spanish course on cellular telephony, a 1.95 MB PDF filed under schematics but evidently a training lesson. It names no device or board number.

PDF document, 145 KB, for the 2SK2316, a part registered under the JIS system where 2SK indicates an N-channel FET.

Electronics-for-beginners guide in Spanish, a 5.77 MB PDF filed under schematics but by its title an educational text rather than a device diagram.

Spanish guide on using the multimeter, a 262 KB PDF catalogued as a schematic but serving as basic training. No device or board number is stated.

PDF document of 885 KB whose Persian file name translates as oscilloscope, which suggests a guide or tutorial on using an oscilloscope rather than a schematic for a…