PDF datasheet, 164 KB, for the PG12032ERU-BNN-B graphic LCD module, a variant within the PG12032 line with its own option code for backlight and display mode. The sheet should include pin assignment, dimensions, electrical limits and bus timing. It is useful for checking supply and contrast voltages on a non-working panel, tracing the interface back to the host board and selecting an equivalent part. Make sure the code on the actual module matches before relying on the pinout or ratings.
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.