Panasonic PT-47WX33G, Service Manual

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in the white area.
3. Check the black and white area for a black and white picture with even
shades of gray and no color tint in the picture.
17.18.2. Low light white balance adjustment
1. Adjust DAC CUT_R for red and DAC CUT_B for blue.
2. Check the screen for even white in all areas, no color.
3. Check the black and white pattern for a black and white picture, even
shades of gray and no color tint in the low light areas.
4. Repeat the high light and low light white balance again until the white
balance tracks from high light to low light.
17.19. NTSC Color adjustment (TINT, B-Y_G, R-Y_A)
NOTE:
1080i, 480p, 480i pattern can be obtained from Panasonic’s TU-DST51 set-top box DTV decoder.
This adjustment requires that the servicer use its skills in observing what a colorbar pattern should
looks like.
Preparation:
1. Set the following in the user picture menu as follows:
- PIC MODE to VIVID
- COLOR to center (31)
- PICTURE to max (63)
- BRIGHT to center (31)
- SHARPNESS to min. (0)
- TINT to center (31)
- NATURAL COLOR to OFF
- COLOR TEMPERATURE to COOL
Procedure:
1. Apply a NTSC color bar pattern
2. Adjust DAC “TINT” so that the fourth bar from right to left becomes
purple and good color balance.
3. If the adjustment is high, the bar will look pinkish, if it is low will look
bluish.
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