Portuguese fault-analysis document for the J700, which by naming convention is most likely a Samsung Galaxy J7 handset, although no brand is stated. The 144 KB PDF appears to be a diagnosis sheet showing typical defects and the circuit areas to check rather than a full service schematic. Technicians use such sheets to jump quickly to likely culprits for no charge, no power or display faults. Confirm the exact model variant on the device label before trusting component positions, and open the file in any PDF reader.
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.