Datasheet in PDF form for the PG24064LRS-GNN-H graphic LCD module, part of the Powertip 240 x 64 dot range. The 120 KB document should list the pin assignment, mechanical outline, electrical characteristics and interface timing. The GNN letters in the suffix likely mark a variant with no backlight or a particular panel type, so compare it with the label on the actual module. Technicians use this kind of sheet to measure the correct logic and LCD drive voltages and to wire or substitute the display in instrumentation.
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.