White Balance Adjustment; Preparation; Cool" White Balance Adjustment; Neutral" White Balance Adjustment - Sony KDL-19L4000 Service Manual

3-3. White Balance adjustment

3-3-1. Preparation

1. Allow approximately 30 minutes for the set to warm up
before proceeding with the white balance adjustment.
2. Connect the signal source to the 3 terminals of the
Component In input (Y/Pb/Pr).
3. Set the Picture Mode to "VIVID" in the user menu.
4. Select the Component In input.
5. Open the Factory Service Menu (see section 3-1.) and select
"Service Alignments Menu".
6. Set "White Point Red", "White Point Green", "White Point
Blue" and "Black Level Offset Red", "Black Level Offset
Green", "Black Level Offset Blue" to average values as
shown in Table 1.
Table 1
Red Green
Gain Gain
Cool 122 119
Neutral 127 117
Warm 127 107
3-3-2. "Cool " White Balance Adjustment
1. Select "COOL" from Color Tone in Service Alignments
Menu.
2. Input 70IRE full white pattern signal into Component In.
3. Adjust "White Point Red", "White Point Green", "White Point
Blue" in Service Alignments Menu if needed.
4. Input 25IRE full white pattern signal into Component In.
5. Adjust "Black Level Offset Red", "Black Level Offset Green",
"Black Level Offset Blue" in Service Alignments Menu if
needed.
6. Repeat steps 2 to 5 to achieve desired White Balance.
3-3-3. "NEUTRAL " White Balance Adjustment
1. Select "NEUTRAL" from Color Tone in Service Alignments
Menu.
2. Input 70IRE full white pattern signal into Component In.
3. Adjust "White Point Red", "White Point Green", "White Point
Blue" in Service Alignments Menu if needed.
4. Input 25IRE full white pattern signal into Component In.
5. Adjust "Black Level Offset Red", "Black Level Offset Green",
"Black Level Offset Blue" in Service Alignments Menu if
needed.
6. Repeat steps 2 to 5 to achieve desired White Balance.
Blue Red Green Blue
Gain Offset Offset Offset
127 0 7
113 1 6
73 2 6
3-3-4. "WARM " White Balance Adjustment
1. Select "WARM" from Color Tone in Service Alignments
Menu.
2. Input 70IRE full white pattern signal into Component In.
3. Adjust "White Point Red", "White Point Green", "White Point
Blue" in Service Alignments Menu if needed.
4. Input 25IRE full white pattern signal into Component In.
5. Adjust "Black Level Offset Red", "Black Level Offset Green",
"Black Level Offset Blue" in Service Alignments Menu if
needed.
6. Repeat steps 2 to 5 to achieve desired White Balance.
7. Save the settings.
3
2
2
- 12 -