Schematic excerpt for the Samsung SM-A12 covering the 2 MP macro rear camera circuit, supplied as a 3.36 MB PDF. It shows the camera connector pinout, the supply rails feeding the sensor and the control and data lines running back to the processor. Use it when the macro camera fails to open or shows a black image, measuring the analog and digital supply voltages and checking the connector pins for shorts to ground. Any PDF reader opens it; confirm the board revision matches your unit before trusting part designators.
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 @phoneSchematics. 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.