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.

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.

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

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.

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.

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

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…

Short electronics course in Spanish, a 1.26 MB PDF catalogued with schematics but evidently a teaching document rather than a circuit for a particular device.

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-language PDF of 39.1 MB titled Electronica con plastilina, covering chapters one to four.

Spanish academic PDF of 1.65 MB: annex 1 of a 2019 master's thesis (TFM, MUPES teacher-training programme) on technology teaching units for the fourth year of ESO…