Acer X110 Service Manual page 62

6. Focus test
Procedure
Inspection item
Criteria
7. Color performance
Procedure
Inspection item
Criteria
- Ref. Defect specification table
- Test equipment: video generator
- Test signal: analog 1024 x 768 @60Hz
- Test pattern: Full screen
- Focus check
- From screen 2.38 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 dis-
play 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
- Test pattern: Master, 64 gray RGBW or SMPT-
Ebar
* Please refer to 4-2 to get into service mode. Use
720p & 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 service
mode to do Color Wheel Index adjustment.
- The PC mode functionally sure be workable
X1161/X1261/X1161A/X1161N/X110/H5360
Full screen
Master
64 gray RGBW
SMPTEbar
Confidential
4-6