PDF reference, 119 KB, for the 2SC3642 transistor. The 2SC prefix in the JIS system marks an NPN bipolar device; the name gives no further detail. Expect datasheet material such as ratings, characteristics and a pin diagram, even though the file is listed as a schematic. During repair it helps verify correct orientation, test the junctions with a meter in diode mode and select a replacement whose voltage, current and footprint match the original part.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)