Third edition of a beginner's guide to reading schematics, a 3.33 MB PDF. It is an educational text rather than a diagram for a specific device.

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.

A PDF guide titled How To Become a Laptop Technician From Zero to Hero, about 4.68 MB, catalogued under schematics but by its name a training book rather than a circuit…

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.

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 guide titled Principales fallas en celulares, the main faults in mobile phones, a 1.34 MB PDF not tied to a specific model or brand.

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.

Persian-language PDF whose title translates roughly as how to test electronic components.

Beginner guide in Spanish for choosing the correct Samsung firmware, a 304 KB PDF. It likely explains how to read the model code, region or CSC, and the bootloader…

Zip archive of Spanish-language reference material on SMD components and the schematic symbols used for them in cell phones.