Optoma GT750, Руководство по обслуживанию

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Confidential
4-4 GT750
Pixel specification
Order Symptom Pattern Criteria
Bright pixel ( dots) Gray 10 pattern A=0
2 Dark pixel(dots) White pattern A≤7
3 Unstable pixel (dots) Any pattern A=0
4 Adjacent pixel (dots) Any pattern A=0
5 Bright blemish (Dirty) Gray 10 pattern
A≤4
(diameter<1 inch)
6 Dark Blemish(Dirty) Blue 60 pattern
A≤4
(diameter<1 inch)
7 Bright pixel on frame Gray 10 pattern ≤1
6. Focus Test
Procedure - Test equipment: video generator.
- Test signal: analog 1280 x 800�60Hz 1280 x 800�60Hz �60Hz
- Test Pattern: full screen
Inspection item - Focus check
Criteria - From screen 0.65 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 pat -
tern. (Blur word on one of the corner after adjust -
ment is acceptable. However, the word should at
least be recognizable.)
7. Color Performance
Procedure - Test equipment: video generator.
- Test signal: 1280 x 800�60Hz, 1080i 1280 x 800�60Hz, 1080i �60Hz, 1080i
- Test Pattern: Master, 64 gray RGBW
Please get into service mode.Use
720p & 1080p signal, master pattern to do HDTV
test. Color cannot discolor to purple and blue.
Inspection item
- Check if each color level is well-functioned.
- Color saturation
Criteria - Screen appears normal. It should not have any
abnormal condition, such as lines appear on the
screen and so on.
- Color appears normal.
Full screen
Master