Optoma EP1690 Service Manual page 48

No Step
0 Dead Pixel
(Bright pixel)
Dead Pixel
(Dark pixel)
 Blemish
(Bright)
2 Blemish
(Dark)
Specification
Cannot accept any
bright pixel
The numbers of
dead pixel should
be smaller or
amount to 6 pixel.
The bright blemish
cannot be accept-
ed if the problem
appear with Gray
30 pattern
The dark blemish
cannot be accept-
ed if the problem
appear with Blue
60 pattern.
Procedure
- Test Pattern: Full
Black
- Test Pattern: Full
White
- Test Pattern:
Gray 30
- Test Pattern:
Blue 60
EP690 / OP280 / OP40
4-6
Photo