Schematic for the M325 sub board, the secondary daughterboard of a phone, compressed as a 1.39 MB ZIP. The name gives no brand; the code may refer to a Samsung M-series model, but that is not confirmed. Sub boards typically carry the charging port, microphone and antenna feed, so this diagram helps with charging faults, dead microphones and flex connector issues. Verify the board marking on your part matches M325 before relying on pinouts or component values from the drawing.
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 @esquemaseletricos. Enginerys does not host this file.
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