The 2SD1760 NPN transistor is documented in this 77 KB PDF, categorised as a schematic though it is a component datasheet. The 2SD prefix follows the JIS naming used for Japanese semiconductors. Expect tables of breakdown voltages, collector current, power dissipation and hFE classes, plus a dimensioned package with pin identification. Technicians use it to check a suspected short, confirm orientation when refitting, and evaluate replacements. Match the package type on the board before trusting the pin diagram.
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 @cyberlanelectonik. 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.