Optoma EP721 Family Service Manual page 36

7. Focus test
Procedure
Inspection item
Criteria
8. Color performance
Procedure
Inspection item
Criteria
- Test equipment: video generator
- Test signal: analog 800 x 600@60Hz(EP721/723
Family) ) Family)
1024 x 768@60Hz(EP727/728 Family)
1280 x 800@60Hz(EW1610 Family)
- Test Pattern: Full screen or MEME Sony
- Focus check
- From screen 1.5 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 ad-
justment is acceptable. However, the word should
at least be recognizable.)
- Test equipment: video generator
- Test signal: DVI (HDMI) 720p,1080i ,1080P
- Test Pattern: Master, 64 GRAY RGBW or SMPTE
RP-133
* Please refer to 4-2 to get into service mode. Use
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 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. However,
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
EP721/727/723/728 Family / EW1610 Family
Family) )
Family) )
64 GRAY RGBW
SMPTE RP-133
Confidential
Full screen
MEME Sony
Master
4-7