PDF datasheet of 95.4 KB for the PG192128LRS-ANN-B graphic display module. The part number points to a 192 by 128 pixel LCD, and ANN-B marks an option set and revision distinct from the BYA version of the same size. The document should list pinout, supply and negative drive voltages, timing for the controller bus and physical dimensions. A technician can use it to verify signals and power at the connector, diagnose a blank screen or plan a swap. Make sure the suffix on your module matches before relying on it.
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.