Generic schematic PDF of 638 KB whose name gives no device, brand or board information. Open it and read the title block or page headers to find out which product and revision it covers before using it for repair. A schematic like this shows component connections, power rails and signal names, which helps when measuring voltages, tracking down shorts or working out a missing part. Only rely on the readings once the board number and revision printed on the PCB match those shown in the drawing.
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 @smart_repair_phone. 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.