Compact 128 KB PDF bearing the part number 2SC2983, indexed as a schematic. Under the Japanese JIS naming convention a 2SC number denotes an NPN bipolar transistor, so expect a component datasheet rather than a full device schematic. The file name states nothing else about maker or package. With it a technician can look up pinout, collector-emitter voltage, collector current and power dissipation, then test the suspect part with a meter in diode mode. Make sure any substitute matches both the ratings and the physical pin order.
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.