Samsung HP-R5052 Service Manual page 35

Alignment & Adjustment
3-4-4 How to adjust White Balance with 10 steps gray pattern
1. If you don't have Toshiba ABL pattern, you can adjust white balance with 10 steps gray scale pattern of Picture 2-5.
2. When you measure Low Light, use 20 IRE portions.
And When you measure High Light, use 70 IRE portion. But if color noise is less in 60 IRE than in 70 IRE, 60 IRE is allowed as
a measure point.
Picture 2-5
3. Perform adjustments 2-b through 2-d from previous page using the 10 step gray scale pattern.
Samsung Electronics 3-15