PDF technical data for the PG9832LRU-ANN-B graphic LCD, 209 KB. The 9832 part of the code likely reflects a 98 by 32 dot resolution, and the LRU-ANN-B suffix selects one variant within the series. Inside you would typically find absolute maximum ratings, supply and contrast voltages, pin descriptions, write and read timing, and dimensions. Handy when diagnosing missing segments, faint contrast or a backlight fault, though the full marking on the module should be matched against this sheet first.
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.