The 1SV314 is described in this 73 KB PDF, listed under schematics in the catalogue. The prefix follows the JIS semiconductor registration for diodes and is used by Toshiba for varactor parts in RF and oscillator stages. The name gives the part number alone. Open it in any PDF reader to check absolute maximum reverse voltage, capacitance at specified bias and the package drawing. Use those figures when sourcing an equivalent for a drifting or dead tuned circuit, after matching the board marking.
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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.