Touch screen circuit schematic for the Samsung SM-A23 (Galaxy A23), supplied as a 2.78 MB PDF. It is one sheet from a set of function-specific diagrams, each covering a single block of the phone. Use it to follow the digitizer connector pins, the supply and I2C lines feeding the touch controller, and the interrupt and reset signals back to the processor. Before measuring, confirm the board matches the SM-A23 variant in hand, since regional versions can differ in component placement and part numbers.
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.
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