Samsung CHB5707L/5237L Service Manual page 21

1. Increase or decrease R_GAIN and B_GAIN to
make the video white.
(For 9300K color adjustment:
x = 0.283 ± 0.02,
Note: Do not touch the G_GAIN controls.
2. Check the ABL. If it is not within the
specifications (37 ± 1 ft-L), use the ABL
controls to adjust it.
(17Ó S-2 CDT: 35 ft-L, 16Ó CDT 33 ft-L)
3. Select COLOR FACTORY SAVE to save the
data.
4. Select ALL MODE SAVE to save the CH2.
6-3-2 (d) WHITE BALANCE ADJUSTMENT VERIFICATION
CONDITIONS
Scanning frequency:
Display image:
X-Y Coordinates:
ABL Luminance
Brightness:
Contrast:
1. Check whether the color coordinates of the
back raster satisfy the above spec.
If they do not, return to 6-3-2 (a) and readjust
all settings.
2. Display a full white pattern.
Note: Do not touch the G_GAIN controls.
3. Adjust the Contrast Control on the monitor so
that the luminance of the video is about 5 ft-L.
4. Check whether the white coordinates of the
video meet the above coordinates spec.
5. Adjust the Contrast Control again so that the
luminance of the video is about 24 ft-L.
6. Check whether the white coordinates of the
video satisfies the above spec.
If they do not, return to 6-3-2 (a) and readjust
all settings.
CHB5**7L/6**7L/7**7L
y = 0.298 ± 0.02.)
68 kHz/85 Hz (17Ó/16Ó)
54 kHz/85 Hz (15Ó)
Back raster pattern
x = 0.283 ± 0.02,
y = 0.298 ± 0.02
35 ± 1 ft-L
33 ± 1 ft-L (16Ó CDT)
Maximum
Maximum
6-3-3 Color Adjustments for 6500K
6-3-3 (a) BACK RASTER COLOR ADJUSTMENT
CONDITIONS
Scanning frequency:
Display image:
Brightness:
Contrast:
1. Select COLOR CHANNEL 2 to control the
color for 6500K.
2. Adjust the luminance of the back raster to
between 0.5 to 0.7 ft-L using the G_CUT
controls.
Note: For 6500K adjustments you must not
change the Screen VR of the FBT. To do so
changes the 9300K setting values.
3. Increase or decrease R_CUT and B_CUT to
adjust the R-Bias to x = 0.313 ± 0.02 and the
B-Bias to y = 0.329 ± 0.02.
6-3-3 (b) G-GAIN ADJUSTMENT
This procedure is the same as that for 9300K, refer
to the procedure on page 6-6.
6-3-3 (c) WHITE BALANCE ADJUSTMENT
CONDITIONS
Scanning frequency:
Display image:
Brightness:
Contrast:
1. Increase or decrease R_GAIN and B_GAIN to
make the video white.
(For 6500K color adjustment:
x = 0.313 ± 0.02, y = 0.329 ± 0.02.)
2. Refer to the procedure for 9300K, section
6-3-2 (c) steps 2 and 3.
6-3-3 (d) WHITE BALANCE ADJUSTMENT VERIFICATION
Refer to the procedure for 9300K, section 6-3-2 (d).
6 Alignment and Adjustments
68 kHz/85 Hz (17Ó/16Ó)
54 kHz/85 Hz (15Ó)
Back raster pattern
Maximum
Maximum
68 kHz/85 Hz (17Ó/16Ó)
54 kHz/85 Hz (15Ó)
Full white pattern
Maximum
Maximum
6-7