Optoma EX542 Service Manual page 45

4. Bright Blemish
Procedure
Inspection item
Criteria
5. Dark Blemish
Procedure
Inspection item
Criteria
6. Focus test
Procedure
Inspection item
Criteria
EX540/EX542/EX612/EX615/EX762/EX540I/EX542I/ES523ST/EW533ST
- Test equipment: video generator
- Test signal: 1024x768 @60Hz
- Test Pattern: Gray 10
- Bright blemish check
- The bright blemish should be less or
equal to 2 under gray 10 pattern.
- Ref. Defect specification table
- Test equipment: video generator
- Test signal: 1024x768 @60Hz
- Test Pattern: Blue 60
- Dark blemish check
- The dark blemish should be less or
equal to 2 under blue 60 pattern.
- Ref. Defect specification table
- Test equipment: video generator.
- Test signal: analog 1024 x 768@60Hz
- Test Pattern: full screen or MEME Sony
- Focus check
- From screen 2.38 Mvia 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.)
Gray 10
Blue 60
Full screen
Confidential
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