PDF schematic for a Positivo Stylo notebook, model STI 1403, with the name indicating a Shuttle-built design. At 885 KB it is a compact document, but it should still contain the power, charging and logic sheets needed for board-level repair. Technicians use it to measure expected voltages at regulator outputs, locate fuses and MOSFETs in the input path, and follow signals when a port or the display stops working. Check that the board markings on your unit correspond to this Shuttle design before relying on component values.
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 @abgm_manutencao_esquemas. 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.