A schematic diagram. Shared as “FIC PCA50 REV 1.2 [SEGREDOSDOSNOTEBOOKS.COM.BR].pdf” — a .pdf file, 1.65 MB.
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 @bartonarquivos. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)