Part 2SC5443 is the only detail this 42.3 KB PDF name provides. The 2SC prefix marks a JIS-registered NPN bipolar transistor, so expect a datasheet with electrical characteristics rather than a full circuit diagram. Before swapping a failed transistor, compare the pin order shown here with the footprint on the PCB, because Japanese parts often use an ECB or BCE layout. Verify the voltage and current limits so the substitute is not underrated for the circuit.
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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