Positivo Stilo XCI3650 circuit diagram in PDF format, 355 KB, referencing motherboard S14BW01 and U30. Like the other copies of this file, it serves board-level diagnosis: following rails out of the PWM controllers, identifying load switches, and isolating which section of the board pulls a rail to ground. Open it in any PDF reader. Because no revision appears in the name, compare the PCB silkscreen with S14BW01 and note any differences in fitted components before trusting values taken from these sheets.
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.