A PDF of 119 KB filed under schematics, though its name is simply the Japanese part number 2SC4364, which points to a component datasheet rather than a board diagram. Under the JIS naming system the 2SC prefix marks an NPN bipolar transistor, and the body is usually printed without the leading 2S, so look for C4364 on the part. Use the pinout, package drawing and absolute maximum ratings to identify the leads, check junctions with a diode-test meter and pick a replacement with equal or better voltage, current and power ratings.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.