Indexed as a schematic, this 76.0 KB PDF relates to the 1SV288 component. Parts numbered with the 1SV prefix are variable-capacitance diodes, so the document is expected to give electrical characteristics, capacitance versus voltage graphs and a mechanical outline. A technician would reach for it while tracing a dead tuner, VCO or AFC stage, to verify that a suspect diode matches its specification or to find a replacement in the same package with a compatible capacitance ratio.
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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