Optoma HD25 Service Manual page 26

Criteria
Pixel specification
Order
 Bright pixel ( dots)
2 Dark pixel(dots)
3 Unstable pixel (dots)
4 Adjacent pixel (dots)
5 Bright blemish (Dirty)
6 Dark Blemish(Dirty)
7 Bright pixel on frame
6. Focus Test
Procedure
Inspection item
Criteria
7. Color Performance
Procedure
- The bright blemish is unacceptable under blue
60 pattern in zone A and no more than 4
bright blemish in zone B.
- Please refer to Pixel specification table. .
Symptom
- Test equipment: video generator.
- Test signal: analog 1920x1080�60Hz
- Test Pattern: full screen
- Focus check
- From screen 1.8M 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.)
- Test equipment: video generator.
- Test signal: 1920x1080�60Hz, 1080i 1920x1080�60Hz, 1080i
- Test Pattern: 64 gray RGBW
Please get into service mode.Use
720p & 1080p signal, pattern to do color
performance. Color cannot discolor to purple and
blue.
Pattern
Gray 10 pattern
White pattern
Any pattern
Any pattern
Gray 10 pattern
Blue 60 pattern
Gray 10 pattern
1920x1080�60Hz �60Hz
�60Hz, 1080i
HD25/HD25LV/HD25e
Criteria
A+B=0
A=0
B≤2
A+B=0
A+B=0
A=0
B≤4
(diameter<1 inch)
A=0
B≤4
(diameter<1 inch)
=0
Full screen
Confidential
4-5