The part code 1SV229 is all this 69.4 KB schematic-category PDF carries in its name, apart from a trailing underscore. No equipment or board information is present. Components using the 1SV prefix are typically variable capacitance diodes, so the content should be single-part data such as outline drawing, pin polarity and capacitance curves. Open it in any PDF viewer. On the bench it supports identifying the diode in a tuner or VCO circuit and choosing a like-for-like substitute. Check the marking first.
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.