Component location map for the main board of the Xiaomi Redmi 3Z and Redmi Note 3, supplied as a 3.08 MB PDF. According to the Chinese title, the reference designators are searchable, so typing a part number into the PDF reader jumps to its position on the board. That makes it practical for finding the capacitor, coil or IC named in the schematic, locating test points and checking parts near a suspected short. Pair it with the matching schematic, and check that the board layout matches your unit before replacing anything.
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 @mobileschematicshub. 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.