Optoma EP720 Family Service Manual page 38

8. Color performance
Procedure
Inspection item
Criteria
look at the entire screen, focus shall be clear,
crisp, and sharp over the entire surface of the
display pattern. (Blue word on one of the corner
after adjustment is acceptable. However, the
word should at least be recognizable.) word should at least be recognizable.) should at least be recognizable.)
- Test equipment: video generator.
- Test signal: 720p,1080i
- Test Pattern: Master, In focus II or SMPTE RP-
133
* Please refer to 4-2 to enter service mode.
Use 720P & 1080i signal, master pattern to do
HDTV test. Color cannot discolor to purple and
blue.
- Check if each color level is well-functioned.
- Color saturations
- 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 acceptable to have few lines flashing at the
center and on the edge of 1080i image. How-
ever, rest of the image should appears stable.
- 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.
- Make sure the PC mode functionas well,
including that frequency and auto detected
function are workable.
EP720 Family/EP726 Family
MEME Sony
Master
InFocus II
/ 64 gray RGBW
SMPTE RP-133
Confidential
4-7