Samsung S7262 troubleshooting document in PDF form, 1.65 MB; Tshoo in the name is a common shorthand for troubleshooting. No board revision is given. Guides of this type typically walk through fault symptoms such as no power, no charging, no display or no audio, listing checkpoints, expected voltages and suspect components. Technicians use them alongside a schematic and multimeter to narrow down faults quickly. It opens in any PDF viewer. Confirm the device model before following the steps, since related variants can 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 @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.