Optoma EX762 Service Manual page 43

5. Dark Blemish
Procedure
Inspection item
Criteria
6. Focus test
Procedure
Inspection item
Criteria
- Test equipment: video generator
- Test signal: 1024x768 @60Hz
- Test Pattern: Blue 60
- Dark blemish check
- The dark blemish should be no more than 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 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.)
EX762/EW762 Confidential
Blue 60
Full screen
4-8