Sony KDL-32R320C Service Manual page 34

3) Start WB adjustment by changing R/G/B Gain & Offset register.
4) After adjustment completed go to Data Save and press  until it shows "W/B" and press enter.
Press 
KDL-32R320C/325C/327C, 40R375C/377C
R/G/B Gain setting around High luminance Adjustment
(Default Value 512)
R/G/B Offset setting around Low luminance Adjustment
(Default Value 0)
Press Enter
ADJUSTMENT
Data is Saved
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