Memory card section of the Samsung Galaxy A30s (SM-A30S) schematic, provided as a 4.29 MB PDF document. It details the microSD slot wiring, including the card supply and data lines to the processor and any protection or pull-up components. It is handy when a card is not detected, letting you check the slot supply, card detect line and signal continuity. Open it with a standard PDF viewer and verify the component designators against the physical board before soldering.
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.