Fingerprint sensor schematic for the Samsung SM-A23 (the name spells it FINGERPINT), a 2.78 MB PDF. It shows the sensor connector, its power supply, interrupt and communication lines running back to the processor. Technicians use it when the fingerprint option disappears from settings or the reader stops responding, checking the supply at the connector and line continuity. As with the rest of this per-function SM-A23 set, confirm that the board revision matches your device before acting on any reading.
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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The standard format for schematics, block diagrams, power-sequence charts and service manuals.