Troubleshooting guide in PDF for the Samsung I9060 handset, with Tshoo being Samsung's usual short form for troubleshooting. Documents of this kind walk through common faults such as no power, no charging, no display or no signal, showing block diagrams, key component locations and the voltages expected at test points. Use it alongside a multimeter and power supply to narrow a fault down to a specific circuit. Check the exact model variant on the device label, since regional versions can differ in components.
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.