Optoma EP1080 Service Manual page 44

4. Dead Pixel (Bright pixel)
Procedure
Inspection item
Criteria
5. Dead Pixel (Dark pixel)
Procedure
Inspection item
Criteria
6. Focus test
Procedure
Inspection item
Criteria
- Test equipment: video generator.
- Test signal: analog 1280x720@60Hz.
- Test Pattern: full black
- Bright pixel check.
Note: Frame dimension under operative zone 1
inch
- Bright pixel is unacceptable.
- Ref. the Defect specification table
Note: The defect criteria follows TI specification.
- Test equipment: video generator.
- Test signal: analog 1280x720@60Hz.
- Test Pattern: full white
- Dead pixel check.
- White pattern (IRE=100)
- Adjacent dark pixel.
- The number of the dead pixels should be less or
equal to 6 pixels.
- Adjacent pixel with each other is unacceptable.
- Ref. the Defect specification table
Note: The defect criteria follows TI specification.
- Test equipment: video generator.
- Test signal: analog 1024 x768@75Hz
- Test Pattern: full screen or MEME Sony
- Focus check
- From screen 2.5 M via visual to check the focus,
look at the entire screen, focus shall be clear,
crisp, and sharp over the entire surface of the
display pattern. (Blur word on one of the corner
after adjustment is acceptable. However, the
word should at least be recognizable.)
EP1080 Series Confidential
Full black
Full white
Full screen
MEME Sony
4-5