Samsung I9105 complete documentation, the Galaxy S II Plus model, in a 6.43 MB PDF, with Comp in the name meaning the complete set. Such files typically include schematics, board layout and troubleshooting procedures from the Samsung service manual. Technicians use them to follow the battery and USB charging path, locate the PMIC, find test points and isolate shorted components. Open with a standard PDF reader and verify the mainboard revision marking before relying on part locations or 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 @tamirat_moobile. 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.