KLV-23M1 - Sony TV Service Manual (repair manual). Page 13

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KLV-23M1 (UC)     2-3E
3.
Adjust W/B in the R_DRIVE and B_DRIVE modes to the
specified highlight adjustment values below.
Format
Item
Setting
Cool
Neutral
Warm
Color Save
R_DRV
134
137
142
G_DRV
128
128
128
B_DRV
139
133
120
R_BKG
110
110
110
G_BKG
128
128
128
B_BKG
110
110
115
4.
Input the 1080i 20% all-gray signal from the Video 4 input.
Control and adjust the SG level so that Y becomes 10Nit.
5.
Adjust W/B in the R_BKG and B_BKG modes to the
specified background adjustment values below (when Y =
10Nit) .
23”
Tolerance
H/L
C/O
x
0.269
0.269
H/L 1.0JND
y
0.268
0.268
C/O 1.5JND
Y
Not specified
20
C/O 1
6.
Adjust W/B while tracking steps 1 to 5 so that the above
specifications are completely satisfied.
7.
Perform Color Save.
2-4-2. White balance adjustment of color
temperature “Neutral”
1.
Set COLOR_INDEX = 2 (Neutral) .
2.
Adjust the value of R_DRIVE, B_DRIVE, R_BKG and
B_BKG to the specification below in the same steps as color
temperature “Cool” of 2-4-1.
23”
Tolerance
H/L
C/O
x
0.277
0.277
H/L 1.0JND
y
0.278
0.278
C/O 1.5JND
Y
Not specified
20
C/O 1
3.
Perform Color Save.
2-4-3. White balance adjustment of color
temperature “Warm”
1.
Set COLOR_INDEX = 3 (Warm) .
2.
Adjust the value of R_DRIVE, B_DRIVE, R_BKG and
B_BKG to the specification below in the same steps as color
temperature “Cool” of 2-4-1.
23”
Tolerance
H/L
C/O
x
0.296
0.296
H/L 1.0JND
y
0.300
0.300
C/O 1.5JND
Y
Not specified
20
C/O 1
3.
Perform Color Save.
4.
After adjustment, restore the setting of the registers that are
not saved by Color Save to their default setting.

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