A 126 KB PDF documenting the 2SC3773 transistor, an NPN device under the JIS 2SC designation. The name holds only the part number, so no board, model or revision can be inferred; despite the schematic label it is most likely a manufacturer datasheet. Useful data includes the pinout, absolute maximum ratings, hFE classes and package drawing. Rely on it when checking a suspected shorted transistor or choosing a replacement, after confirming the marking on 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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.