ViewSonic VP730 Service Manual page 29

The message (E2PROM Acknowledge Not Echo) will display on the screen if there is any error
detected by Programming PC. If error message is happened, please re-check the connection of
cable and return to first step.
Please refer to the Viewsonic EDID data format that was printing on ID label.
PPPYYWWxxxxx
PPP = Viewsonic Regional Product ID Code, EX. VE500 is "910", VE700 is "A10" and
VG900 is "A1C ".
YY= 2 digits of Manufacturing year. (range 1996-2015).
WW = 2 digits of Manufacturing week (range 01-54).
xxxxx = 5 digits of Sequence number. (range 00001-99999).
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D o Not Copy V P730/b