Indexed as a schematic, this 45.3 KB PDF is in fact named after the 2SA1738, a PNP bipolar transistor under JIS numbering, so it serves as the component datasheet. The _E ending likely indicates an English edition, while maker and revision are not stated. Refer to it for pinout, package dimensions, absolute maximum ratings and characteristic data, and verify the part marking and footprint on the PCB before using the sheet to approve a replacement.
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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