Huawei Y9 2019 smartphone schematic in PDF format, 4.32 MB, titled in Spanish as esquemático. It can be opened in any PDF viewer and is used to trace the power-management circuitry, charging path, display and camera connector lines and other signals on the mainboard. Technicians rely on such diagrams when tracking a short to ground or a missing supply voltage. No board revision is given in the name, so confirm that the hardware variant of the handset matches the drawings before working from component locations.
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 @uzb4422. 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.