CLEAN BURN CB-2800 Service Manual download pdf (Page 40)

ES526/EX536/EX531/CB2800/ES526L/EX536L/DS316L

Condential

4-9

8. 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 abnor-

mal condition, such as lines appear on the screen and

so on.

- Color appears normal.

- It is unacceptable to have few lines ashing.

- RGBW should all appear normal on the screen and

sort from R-G-B-W.

- Color levels should be sufcient and normal. (The uni-

dentied 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 include

support format with frequency and auto detected func-

tional will be workable.

4-7 Video Performance

1. CVBS

Procedure - Test equipment: DVD player

- Test signal: CVBS

Inspection item - Video performance test

Inspection Distance - 1.8 M ~2.5 M

Criteria - Check any abnormal color, line distortion or any noise

on the screen.

Motion video

64 gray RGBW

Master

SMPTEbar

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CLEAN BURN CB-2800 Service Manual Page 40