A 135 KB PDF datasheet for the PC1601LRU-FSO-B module; the 1601 code conventionally indicates a one-line display of 16 characters. FSO-B is the variant suffix. Sheets of this type normally list connector pinout, supply and LCD drive ratings, backlight specifications, timing requirements and dimensions. Technicians use them to check power and contrast pins on a dead single-line panel and to confirm that a replacement shares footprint and pinout; verify the label code 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.
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