Optoma EX765 Service Manual page 52

7. Focus test
Procedure
Inspection item
Criteria
8. Color performance
Procedure
Inspection item
Criteria
- Test equipment: video generator
- Test signal: analog 1024 x 768 @60Hz analog 1024 x 768 @60Hz
- Test pattern: Full screen
- Focus check
- From screen 2 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.)
- Test equipment: video generator.
- Test signal: 480p, 720p, 1080i, 1080p
- Test pattern: Master, 64 gray RGBW or SMPTEbar
* Please refer to 4-2 to get into Engineering Mode.
Use, 480p, 720p, 1080i,1080p signal, master , 480p, 720p, 1080i,1080p signal, master
pattern to do HDTV test. Color cannot discolor to
purple and blue.
- Check if each color level is well-functioned.
- Color saturation
- Screen appears normal. It should not have any
abnormal condition, such as lines appear on the
screen and so on.
- Color appears normal.
- It is unacceptable to have few lines flashing.
- RGBW should all appear normal on the screen and
sort from R -G-B-W.
- Color levels should be sufficient and normal. (The
unidentified color levels on both left and right sides
should not over 8 color levels.)
- Gray level should not have abnormal color or
heavy lines.
- If color appears abnormal, please get into
Engineering Mode to do Color Wheel Index
adjustment.
- The PC mode functionally sure be workable
include support format with frequency and auto
detected functional will be workable.
EX765/EW766/EX765W/EW766W
1080i, 1080p 1080p
signal, master
Full screen
Master
64 gray RGBW
SMPTEbar
Confidential
4-8