Optoma EP720 Family Service Manual page 36

Inspection item
Criteria
3. Blemish (Dark)
Procedure
Inspection item
Criteria
4. Blemish (Bright)
Procedure
Inspection item
Criteria
- Test Pattern: gray 10 patterns
- Check if the light leaks.
* Light leak may exist on reflective edge, eye-
catcher, bondwires and exposed metal.
- Light leak check.
- Bright blemish (dirty).
- The pattern cannot accept the color level of the
leakage is brighter than the gray 10 pattern.
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz(EP720 analog 800 x 600@60Hz(EP720
- Test Pattern: blue 60
- Dark blemish check.(dirty)
- The dark blemish is unacceptable in zone A.
The number of dark blemish is less or equal to
4 in zone B.
- Test equipment: video generator.
- Test signal: analog 800 x 600@60Hz(EP720
- Test Pattern: gray 30
- Bright blemish check.(dirty)
- The number of bright blemish is less or equal to
4 under gray 30 pattern.
Family)
1024x768@60Hz(EP726
Family)
Family)
1024x768@60Hz(EP726
Family)
Family)
1024x768@60Hz(EP726
Family)
EP720 Family/EP726 Family
Gray 10
Blue 60
Gray 30
Confidential
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