Datasheet in PDF format, 131 KB, for alphanumeric LCD module PC2402ERU-LSO-B. According to the common pattern this is a 24 character by 2 line display, with ERU-LSO-B encoding backlight, viewing, temperature options and revision B. The sheet should cover the pin layout, controller interface timing, absolute maximum ratings, power and contrast supply and mechanical dimensions. Use it when a front panel shows nothing or garbled text, or when wiring an equivalent module. Confirm the label suffix first, as other PC2402 variants differ.
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.