KDL-40V3000, KDL-46V3000 - Sony TV Service Manual (repair manual). Page 17

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WAX3F
RM-ED009
3-4. White Balance Adjustment
The following adjustments are done via ECS.
3-4-1. Set up mode for White Balance Adjustment
1. Set up SREG_COL_MTRX_IDX_OFF = 3.
3-4-2. White Balance of Colour Temperature “Cool”
1. Refer to the table below and apply offset. (For Cool mode).
13. Set SREG_G_GAM_IDX_OFST.
Offset Value C
40"
tmp75_temp
=<9100
9100<tmp75_
temp=<10368
10368<tmp75
_temp=11136
11136<tmp75
_temp
3
2
1
0
46"
tmp75_temp
=<9100
9100<tmp75
_temp=<10496
10496<tmp75
_temp=<11264
11264<tmp75
_temp
3
2
1
0
tmp75_temp
80IRE
50IRE
30IRE
20IRE
U
V
U
V
U
V
U
V
40"
tmp75_temp=<9856
0.0019
-0.0024
0.0018
-0.0029
0.0012
-0.0044
0.0008
-0.0047
9856<tmp75_temp=<10752
0.0013
-0.0015
0.0012
-0.0018
0.0009
-0.0027
0.0006
-0.0030
10752<tmp75_temp=<11072
0.0006
-0.0005
0.0006
-0.0004
0.0005
-0.0009
0.0002
-0.0010
11072<tmp75_temp
0
0
0
0
0
0
0
0
46"
tmp75_temp=<9856
0.0011
-0.0019
0.0008
-0.0023
0.0008
-0.0020
0.0007
-0.0018
9856<tmp75_temp=<10752
0.0005
-0.0009
0.0004
-0.0011
0.0004
-0.0009
0.0004
-0.0008
10752<tmp75_temp=<11072
0
0
0
0
0
0
0
0
2. Set up SREG_COLOR_TEMP = 0 (Cool).
3. Set up SREG_TEST_G_LEVEL = 204 (80 IRE).
4. Adjust SREG_WB_GAM_R(B)05 chroma values so that they are within tolerance in the table below.
U
V
Tolerance
40"
0.1915
0.4322
<0.0008
46"
0.1907
0.4312
<0.0008
11. Wait for calculation in TV Micro.
(This calculation value is “A”).
12. Calculate register SREG_G_GAM_IDX_OFST using the formula
and tables below.
SREG_G_GAM_IDX_OFST = A - C
5. Set up SREG_TEST_G_LEVEL = 128 (50 IRE).
6. Adjust SREG_WB_GAM_R(B)04 chroma values so that they are within tolerance in the table below.
U
V
Tolerance
40"
0.1905
0.4323
<0.0008
46"
0.1902
0.4314
<0.0008
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