A 468 KB PDF covering the 2SC3607 transistor, filed in the schematic category but best treated as a manufacturer datasheet. In Japanese JIS numbering the 2SC series covers NPN bipolar transistors aimed at high-frequency circuits. Its larger size suggests extra graphs or package drawings, though that cannot be confirmed from the name alone. Use it to verify pinout, rated voltages, power dissipation and gain before replacement, and match the printed marking and package on the board with the outline shown in the file.
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.