Optoma ML300 Service Manual page 30

Pixel specification
Order Symptom

Bright pixel ( dots)
2
Dark pixel(dots)
3
Bright blemish
4
Dark Blemish
5
Bright dot on frame
�
Unstable pixel
7
Adjacent dark pixel
6. Focus Test
Procedure
Inspection Distance
Inspection item
Criteria
Unbalance
Gray 10 pattern
White pattern
Any pattern
Any pattern
Gray 10 pattern
Any pattern
Any pattern
- Test equipment: video generator
- Test signal:1280�800��0Hz 1280�800��0Hz
- Test Pattern: Full screen
- 0.8M~1M
- Focus check
- From screen 1M via visual to check 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 thecorner after adjustment is acceptable.
However, the word should at least be recognizable.)
- After adjust the lens ,if the diagonal or adjacent two
grids vague,it will be regarded as" NG"
Pattern
A=0
A ≤ 4
Blemishes are allowed
Blemishes are allowed
≤ 1
A = 0
A = 0
Criteria
ML300
Confidential
Full Screen
4-4