ASUS N56VZ notebook archive in ZIP format, around 260 KB. The name is cut off after 69N0, which looks like the start of an ASUS part number, and it says nothing about the board revision or the file contents. At this size it most likely holds a boardview or a compact document, so unpack it and check. Repair files for this model help trace power rails, locate components and find test points on the mainboard. Compare the revision silkscreened on the PCB with the files before using them for diagnosis.
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 @boardview. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.