The 2SA1572 transistor is documented in this 49.4 KB PDF. No board or equipment model appears in the name, so treat it as a component datasheet. In the JIS numbering system, 2SA indicates a PNP high-frequency bipolar transistor. Expect ratings for collector-emitter voltage, collector current and dissipation, plus gain ranks and package dimensions. Use it to verify pinout during meter checks and to vet substitutes. Always compare the lead order of a replacement against this drawing, as similar packages can be wired differently.
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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