Service manual
– 37 –
KLV-26/32/40/46V300A
RM-GA008
3-4. White balance adjustment
Adjust the following items via ECS
3-4-1. Initial setting for white balance
i) Set up SREG_COL_MTRX_IDX_OFF = 3
ii) Set up SREG_COL_MTRX_IDX_L = 3
iii) Set up SREG_COL_MTRX_IDX_M = 3
iv) Set up SREG_COL_MTRX_IDX_H = 3
3-4-2. White balance adjustment when color
temperature is “cool”
1. Set up SREG_COLOR_TEMP = 0 (Cool)
Reference: To separate GAMMA & WB adjustment, operate the
following initial setting before WB adjustment
- Send ECS command: CSC_BYPASS_INIT_SET
2. Set SREG_TEST_G_LEVEL = 204 (80 IRE)
3. Adjust values of SREG_WB_GAM_R (B) 05 to be the chroma
in below table
4. Set SREG_TEST_G_LEVEL = 128 (50 IRE)
5. Adjust values of SREG_WB_GAM_R (B) 04 to be the chroma
in below table
6. Set SREG_TEST_G_LEVEL = 76 (30 IRE)
7. Adjust values of SREG_WB_GAM_R (B) 03 to be the chroma
in below table
8. Set SREG_TEST_G_LEVEL = 51 (20 IRE)
9. Adjust values of SREG_WB_GAM_R (B) 02 to be chroma in
below table
10. Set SREG_WB_GAM_R( B) 01 as follows;
SREG_WB_GAM_R (B) 01
= SREG_WB_GAM_R (B) 02
+ [SREG_WB_GAM_R (B) 02-SREG_WB_GAM_R (B) 03]
11. Set SREG_WB_GAM_R06-07 and SREG_WB_GAM_B06 ~ 07
as follows;
[When ADJ data SREG_WB_GAM_B05 > 154]
[ADJ data SREG_WB_GAM_R05 > 128]
SREG_WB_GAM_R (B) 06 = SREG_WB_GAM_R (B) 05
- [SREG_WB_GAM_R (B) 05 - SREG_WB_GAM_R (B) 04] /2
SREG_WB_GAM_R (B) 07 = 128
[ADJ data SREG_WB_GAM_R05 = < 128]
SREG_WB_GAM_B06 = SREG_WB_GAM_B05
- [SREG_WB_GAM_B05-SREG_WB_GAM_B04] /2
SREG_WB_GAM_B07 = 128
SREG_WB_GAM_R06 = SREG_WB_GAM_R07
= SREG_WB_GAM_R05
[When ADJ data SREG_WB_GAM_B05 = < 154]
SREG_WB_GAM_R (B) 06 = SREG_WB_GAM_R (B) 07
= SREG_WB_GAM_R (B)_05
3-4-3. White balance adjustment when color
temperature is “Neutral”
1. Set up SREG_COLOR_TEMP = 1 (Neutral)
2. Set SREG_TEST_G_LEVEL = 204 (80 IRE)
3. Adjust values of SREG_WB_R (B) 05_OFST to be the chroma
in the below table
4. Set SREG_TEST_G_LEVEL = 128 (50 IRE)
5. Adjust values of SREG_WB_R (B) 04_OFST to be the chroma
in the below table
6. Set SREG_TEST_G_LEVEL = 76 (30 IRE)
7. Adjust values of SREG_WB_R (B) 03_OFST to be the chroma
in the below table
8. Set SREG_TEST_G_LEVEL = 51 (20 IRE)
9. Adjust values of SREG_WB_R (B) 02_OFST to be chroma in
the below table
10. Set values of SREG_WB_GAM_R (B) 01_OFST as follows;
SREG_WB_R (B) 01_OFST
= SREG_WB_R (B) 02_OFST
+ [SREG_WB_R (B) 02_OFST-SREG_WB_R (B) 03_OFST]
11. Set values of SREG_WB_R06 ~ 07_OFST and
WB_B 06 ~ 07_OFST as follows;
SREG_WB_R (B) 07_OFST
= SREG_WB_R (B) 05_OFST
+ [SREG_WB_R (B) 05_OFST-SREG_WB_R (B) 04_OFST]
SREG_WB_R (B) 06_OFST
= SREG_WB_R (B) 05_OFST
+ [SREG_WB_R (B) 05_OFST-SREG_WB_R (B) 04_OFST] /2
12. Send ECS command: COLOR_SAVE
Internal
signal
(IRE)
SREG
_Test_G
_LEVEL
SPEC target
46"
40"32"26"
20 51 0.5->0.7->1JND
.0014->.00196->.0028
0.5->0.7->1JND
.0014->.00196->.0028
0.5->0.7JND
0.0014->0.00196
0.3->0.5JND
0.0008->0.0014
0.2719 0.2734 0.2739 0.2745
0.2788 0.2741 0.2779 0.2795
0.1875 0.1904 0.1893 0.1891
0.4325 0.4296 0.4322 0.4333
0.2751 0.2743 0.2724 0.2729
0.2732 0.2717 0.2662 0.2670
0.1921 0.1921 0.1929 0.1929
0.4292 0.4281 0.4241 0.4247
0.2728 0.2730 0.2726 0.2723
0.2688 0.2719 0.2705 0.2702
0.1921 0.1910 0.1913 0.1912
0.4259 0.4281 0.4270 0.4268
0.2748 0.2744 0.2754 0.2758
0.2758 0.2757 0.2754 0.2759
0.1908 0.1906 0.1914 0.1916
0.4309 0.4308 0.4308 0.4312
30 76
50 128
80 204
x
y
u'
v'
x
y
u'
v'
x
y
u'
v'
x
y
u'
v'
x
y
u'
v'
The target of White balance adjustment when color temperature is “Cool”.
Internal
signal
(IRE)
SREG
_Test_G
_LEVEL
SPEC target
46"
40"32"26"
20 51 0.5->0.7->1JND
.0014->.00196->.0028
0.5->0.7->1JND
.0014->.00196->.0028
0.5->0.7JND
0.0014->0.00196
0.3->0.5JND
0.0008->0.0014
0.2818 0.2813 0.2820
0.2839 0.2878 0.2812
0.1929 0.1910 0.1941
0.4373 0.4397 0.4356
0.2849 0.2841 0.2830
0.2867 0.2883 0.2843
0.1941 0.1929 0.1936
0.4395 0.4404 0.4377
0.2838 0.2833 0.2852
0.2843 0.2893 0.2850
0.1943 0.1919 0.1950
0.4378 0.4409 0.4385
0.2827 0.2822 0.2847
0.2860 0.2889 0.2883
0.1928 0.1912 0.1933
0.4388 0.4405 0.4405
0.2806
0.2790
0.1940
0.4339
0.2821
0.2823
0.1938
0.4363
0.2849
0.2846
0.1950
0.4382
0.2843
0.2875
0.1934
0.4399
30 76
50 128
80 204
x
y
u'
v'
x
y
u'
v'
x
y
u'
v'
x
y
u'
v'
The target of White balance adjustment when color temperature is “Neutral”.