Optoma EP721 Family Service Manual page 84

Serial Number Format for Projector (For EP723)
Q 89M
1 2
1 :
2 :
3 :
4 :
5 :
6 :
7 :
EX: Q89M823AAAAAC0001
This label represents the serial number for EP723. It is produced at CPC on twenty-three
week of 2008. Its serial code is 0001.
8 23 AAAAA C
3 4
Q = Optoma
89M = Project code
8 = Last number of the manufacture year (ex:2008 = 8)
23 = week of the manufacture year ( ex: the twenty-three week of
the year = 23)
����� �� not��efine�
C = Manufacture factory (TW or China)
0002 = Serial code
EP721/727/723/728 Family / EW1610 Family
0001
5 6 7
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