Datasheet in PDF format for the PG320240FRF-FNN-H module, the name tagged OK, which likely marks it as a verified or approved copy. The part code points to a 320 x 240 dot graphic LCD, while the FRF and FNN letters encode build options that the document explains. Inside you should find pinout, voltages, timing and mechanical data. Check the complete suffix on the module sticker against this sheet before relying on its voltage or backlight figures.
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 @acodis_lcd_datasheets_EDID. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)