42SL90QR-MA (CHASSIS:LP91L) - LG TV Service Manual (repair manual). Page 13

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* CASE
First adjust the coordinate far away from the target value(x, y).
1. x, y > target
i) Decrease the R, G. 
2. x, y < target
i) First decrease the B gain, 
ii) Decrease the one of the others.
3. x > target, y < target
i) First decrease B, so make y a little more than the target.
ii) Adjust x value by decreasing the R
4. x < target, y > target
i) First decrease B, so make x a little more than the target.
ii) Adjust x value by decreasing the G
(4) Standard color coordinate and temperature when using the
CA100+ or CA210 equipment
(Slim LCD/LED module’s color coordinate is different from
others, so use below table) 
-  42/47SL90QR (In case of Edge LED module, the color
coordinates is changing  by aging, so you have to use
the below table.) 
• In the SET applied LED module (LH90QR, SL90QR
Series), cause of the physical characteristics of LED
Module, sets are taken a 120 minutes by aging time to
stabilize a color coordinates. So White Balance Control
equipments have to get the SET Aging Time from the SET
and then  going to control the W/B by revise color
coordinates at each time  
To check the Coordinates of White Balance, you have to
measure at the below conditions.
Picture Mode : User 1
Dynamic Contrast : Off
Dynamic Colour : Off
(If you miss the upper condition, the coordinates of W/B
can be lower than the spec.)
- 13 -
Coordinate 
Mode 
x y 
Temp uv
Cool 0.269±0.002 
0.273±0.002
11000K  0.000
Medium 0.285±0.002 0.293±0.002
9300K 
0.000
Warm 0.313±0.002 0.329±0.002
6500K 
0.003
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