Spanish document about coils, the file name meaning inductors, a 1.17 MB PDF. No device or board is mentioned, so it is general material on how inductors work, how they are marked and where they appear in circuits. On phone and laptop boards inductors are key parts of buck and boost converters, so an open or burnt coil often explains a missing rail. Measure continuity with power removed, check for cracks, and when replacing match inductance, current rating and package size rather than appearance alone.
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.