Huawei P6 repair archive in RAR format, 12.8 MB, with only the model name given and no detail about the enclosed documents. Bundles of this size for Huawei phones often hold schematics, component placement drawings and a maintenance manual. Such files support tracing supply rails from the battery connector through the PMIC, locating test points and finding the cause of a short. Extract it with a RAR-capable tool, review the contents, and check the PCB revision marking against the documentation before relying 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 @tamirat_moobile. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.