The 2SC2458L, the L-suffixed variant of the 2SC2458 transistor, is the subject of this 341 KB PDF. The name does not say what the L suffix denotes, so read it from the document itself. As a JIS 2SC part it is an NPN device, and the file, though labelled a schematic, is most likely its datasheet. Check the package drawing and pinout closely, because suffix variants can differ in lead form or case from the base 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.
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