Component location map for the small sub-board of the Redmi K40 Pro smartphone, provided as a 95.4 KB PDF. A location map shows where each part sits on the PCB, so it is used alongside the schematic to find capacitors, connectors and test points on the charging-port board. Open it in any PDF reader and zoom to read reference designators. Before replacing parts, confirm the sub-board revision on your phone matches, as minor layout changes occur between production batches.
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 @schematic_mobile5. 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.