Huawei G510 material packed in a 3.92 MB zip archive, with nothing beyond the model number in the name to say what it contains. Phone repair packages of this kind usually carry a schematic, PCB layout images or a service manual, so extract it and review the files first. Such documents let a technician trace supply rails from the PMIC, identify test points and find parts around the charging port or display connector. Confirm the board revision printed on your PCB matches whatever drawings are included before relying on them.
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 @Schematics_Mobile. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.