Schematic file in PDF for the Samsung I9000, the original Galaxy S, with only the model number in the name. At around 13.6 MB it is likely a fairly complete document, though its exact contents are not stated. Such schematics allow a technician to follow power rails from the PMIC, check the charging and USB path and identify parts on a shorted line. Open it in any PDF reader and search for reference designators. Compare the model on the device label, because regional I9000 variants may differ.
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 @Schematic_mobile_iran. 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.