PG12032LRU-CNN-B graphic LCD module specification, PDF, 165 KB. It is the C option of the same family as the DNN version, with letters that usually change backlight or viewing mode. Inside are the connector pin functions, physical outline, supply ratings and timing. Use it to confirm voltages at the module when a display is dim or blank and to check whether a replacement is fully compatible. Read the full code on the module label before treating this as the right reference.
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.