Acer P7280 Refresh Service Manual page 101

7. Color performance
Procedure
Inspection item
Criteria
should at least be recognizable.)
- Test equipment: video generator.
- Test signal: DVI (HDMI) 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. If the test result is discoloration or flicker-
ing, please return the unit back to repair
centers.
- 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.)
- Grey level should not have abnormal color or
heavy lines.
- The PC mode functionally sure be workable
include support format with frequency and auto
detected functional will be workable
P7280/P7270I/P7280 Refresh/P7270I Refresh Confidential
Master
In Focus II
/ 64 gray RGBW
SMPTE RP-133
4-7