Huawei Y500 service package compressed as a 330 KB ZIP, with no indication in the name of what is inside. Given the small size it may be a compact schematic or a few diagram pages rather than a full manual, so extract and review the contents first. Material of this kind is used to follow power rails, identify components by designator, read connector pinouts and find test points. Make sure the board revision on your phone matches the documentation before replacing parts based on it.
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 .zip file
Compressed archive that every operating system opens without extra software.