Backlight circuit schematic for the Samsung SM-A23, provided as a 2.78 MB PDF. The sheet focuses on the display lighting path, showing the backlight driver, boost components and the anode and cathode lines to the panel connector. It helps pinpoint why a screen shows a faint image but no light, by tracing the boost output, the enable signal and any open coil or diode. Any PDF viewer opens the file; check that your board corresponds to the documented SM-A23 version before measuring.
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.