The 2SA1805 PNP transistor, as indicated by its JIS 2SA prefix, is documented in this 176 KB PDF datasheet. The file sits in the schematic category but contains device data rather than a board diagram. Look here for absolute maximum ratings, hFE classes, characteristic curves and the mechanical outline with lead identification. It is useful when confirming which pin is base or collector before measuring, or when selecting an equivalent. Check that the package on your board matches the one described.
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.