A short 31 KB PDF for the 1SV316 diode, filed in the schematic category. A separate entry with UV and sot323 tokens also exists for this part number, so compare both if details differ. The 1SV numbering is the JIS diode designation that Toshiba uses for varactor diodes. The name gives nothing beyond the part number. Use the sheet to look up ratings, marking and capacitance versus reverse voltage when checking or substituting a tuning diode, and match it with the part on the board 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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.