A 519 KB PDF datasheet for the PG16032ERS-BAN-H graphic display module, a part whose digits point to a 160 by 32 dot matrix. The longer ordering code after the base number defines a particular build, and the sheet should explain how each letter maps to options such as backlight or temperature range. Useful when repairing a front panel: check the connector pin assignment, logic and LCD drive voltages, and outline dimensions. Match the full code printed on the module rear, since differently suffixed versions may not be pin-compatible.
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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The standard format for schematics, block diagrams, power-sequence charts and service manuals.