Filed in the schematic section, this 156 KB PDF is named for the 2SC4135, which by JIS convention is an NPN bipolar transistor, so expect a component datasheet inside. The part is commonly marked C4135 on its case. Use the document to identify terminals, review absolute maximum voltage, current and dissipation values and compare characteristics when looking for an equivalent replacement. The name carries no manufacturer or document version; confirm package type and marking on the failed device before relying on the published figures.
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.