PG16032-A is the subject of this 125 KB PDF datasheet, covering the A variant of a 160 by 32 pixel graphic LCD module. Look in it for pin functions, recommended operating voltages, the bias or negative voltage needed for contrast, and the mechanical outline with mounting holes. It helps when diagnosing a blank or faded display, tracing the data bus back to the host board, or sourcing a substitute part. Compare the variant letter and board outline with the physical module before swapping anything.
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.