Service manual

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.
PPPYYWWAxxxx
PPP = Viewsonic Regional Product ID Code, EX. Q9 is “PW1”, Q9b is “PW3”.
YY= 2 digits of Manufacturing year. (range 1996-2015).
WW = 2 digits of Manufacturing week (range 01-54).
A = 0~1 HSD A grade + Realtek
A = 2~3 HSD A- grade + Realtek
A = 4~5 HSD V grade + Realtek
A = 6~9 Reserve
xxxx = 4 digits of Sequence number. (range 0001-9999).
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ViewSonic Corporation Confidential
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Do Not Copy Q9-1_Q9b-1