PDF datasheet of 189 KB for the PG12864LRS-JNN-B, a graphic LCD module whose base number denotes a 128 by 64 dot matrix. The LRS series code and JNN-B suffix identify one specific configuration, which the ordering table should break down. Typical content covers interface pins, supply and contrast voltages, backlight specifications and outline dimensions. Use it to check signals at the module connector when a display stays blank, and compare the complete code against the module label before choosing a replacement.
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.