Acer P3250 REFRESH, P3150 REFRESH service manual Video Performance, Color performance

7. Color performance

Procedure	- Test equipment: video generator.
	- Test signal: 480p, 720p, 1080p
	- Test Pattern: Master, 64 gray RGBW or
	SMPTE bar
	* 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.
Inspection item	- Check if each color level is well-functioned.
	- Color saturation
Criteria	- 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 4 color levels.)
	- Gray level should not have abnormal color or
	heavy lines.
	- If color appears abnormal, please get into ser-
	vice mode to do color wheel index adjustment.

Master

64 gray RGBW

SMPTE BAR

4-7 Video Performance

1. CVBS

Procedure		- Test equipment: DVD player
		- Test signal: CVBS
Inspection item		- Video performance test
Inspection Distance		- 1.8M ~2.5M
Criteria		- Check any abnormal color, line distortion or any	SMPTE RP-133
		noise on the screen.
	P3150/P3250/P3150 Refresh/P3250 Refresh/P3251		Confidential	4-