PDF for the KIA324P, a KEC quad operational amplifier compatible with the widely used LM324, in a DIP package as the P suffix suggests. At 321 KB it is listed as a schematic but serves as the component datasheet. The chip works from a single supply and appears in chargers, SMPS feedback stages and audio equipment. Technicians use the pin diagram to measure each of the four amplifiers and find a faulty channel. Check the marking on the board and remember that LM324 substitutes share the standard pinout.
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.