PDF for the 2SC1172, 74.4 KB, listed among schematics with no further detail in its name. The 2SC prefix denotes an NPN transistor under JIS numbering, and this part is commonly associated with high-voltage horizontal output stages in older CRT sets, so expect ratings and a package drawing. Technicians consult it to verify collector voltage limits, check for damper diode presence, confirm pinout and select a compatible replacement. Open it in any PDF viewer and compare the actual part marking and case before substituting.
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.