Reference PDF for the 74LVX32, a quad 2-input OR gate from the low-voltage 74LVX logic family, catalogued under schematics at 68.6 KB. The document should give the pinout, truth table, supply voltage limits and switching characteristics. When a logic signal on a board is stuck or missing, the pin diagram lets you probe each input and output with a scope or meter and decide whether the gate itself has failed. Check the package type and suffix on the chip before ordering a replacement, since several pin-compatible families exist.
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.