PDF specification, about 149 KB, for the PG320240ARF-GNN-H graphic display module, a 320 x 240 dot LCD judging by the part code. The ARF and GNN letters define options such as backlight colour, viewing mode or temperature range, explained inside. Look for pinout, supply and contrast voltages, timing and outline. Use it to verify wiring and power on a blank display, and match the complete suffix on the module sticker before substituting a part.
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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)