Optoma EW536 Service Manual page 37

Criteria
5. Blemish (Bright)
Procedure
Inspection item
Criteria
6. Blemish (Dark)
Procedure
Inspection item
Criteria
7. Focus test
Procedure
Inspection item
Criteria
- The number of the dead pixels should be less or
equal to 7 pixels.
- Adjacent pixel with each other is unacceptable.
- Ref. Defect specification table
- Test equipment: video generator
- Test signal: analog 1280 x 800 @60Hz
- Test pattern: Gray 10
- Bright blemish check.
- It is acceptable when it has 4 bright blemishes
under gray 10 pattern.
- Ref. Defect specification table
- Test equipment: video generator
- Test signal: analog 1280 x 800 @60Hz
- Test pattern: Blue 60
- Dark blemish check.
- It is acceptable when it has 4 bright blemishes
under Blue 60 pattern.
- Ref. Defect specification table
- Test equipment: video generator
- Test signal: analog 1280 x 800 @60Hz
- Test pattern: Full screen
- Focus check
- From screen 2.4 M via visual to check the focus, look
EW536/HD66/DW318
Gray 10
Blue 60
Full screen
Confidential
4-6