ZIP archive of 8.67 MB whose name points to an electrical schematic (E.E, Portuguese abbreviation for esquema elétrico) for the Samsung Galaxy J4, model J400. Unpack it to reach the diagrams, which are useful for following power rails from the battery connector, checking charging circuitry and identifying pinouts on display and sub-board connectors. Compare the model label on the device with J400 before trusting values, since the J4 Plus and other J-series phones use different main boards.
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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