Toshiba-style part number 1SV264 names this 65.3 KB PDF, which the index lists under schematics. The 1SV series consists of varactor diodes, so the file is most likely a device data sheet rather than a board-level drawing. Check it for the anode and cathode pins, the marking code printed on the tiny package and the capacitance range across reverse bias. This lets you confirm a suspect part on a tuner or oscillator section and find a workable equivalent. It opens in any common PDF program.
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.