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

* 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