Spanish repair training document titled learning to repair, a 4.09 MB PDF and a different file from the similarly named from-scratch course. The name gives no device type or model, so expect general guidance on components, tools and methods for diagnosing electronic faults. It is useful for beginners building a repair foundation before moving to model-specific work. When working on a real unit, always rely on the schematic and boardview matching the board number printed on the PCB rather than generic examples.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @canalesquematicos. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.