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

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5.3. Adjustment of White Balance (for Manual
adjustment)
(1) Color analyzer(CA100+, CA210) should be used in the
calibrated ch by CS-1000
(2) Operate the zero-calibration of the CA100+ or CA-210,
then stick sensor to the module when adjusting.
(3) For manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run by pressing “POWER
ON” key on remote control for adjustment then operate
heat run longer than 15 minutes. (If not executed this
step, the condition for W/B may be different.)
2) Push “Exit” key.
3) Change to the AV mode by remote control.
4) Input external pattern (85% white pattern)
5) Push the ADJ key -> Enter “0000” (Password)
6) Select “3. W/B ADJUST”
7) Enter the W/B ADJUST Mode
8) Stick the sensor to the center of the screen and select
each items (Red/Green/Blue Gain and Offset) using
D
/
E
(CH +/-) key on R/C..
9) Adjust R/ G/ B Gain using 
F
/
G
(VOL +/-) key on R/C.
10) Adjust three modes all (Cool / Medium / Warm) : Fix
the one of R/G/B gain and change the others
11) When adjustment is completed, Enter “COPY ALL”.
12) Exit adjustment mode using EXIT key on R/C.
* 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
- The Time Table of color coordinates by SET Aging Time
In the SET applied LED module (LH90QR 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 : Select Vivid and change
Dynamic Contrast : Off
Dynamic Colour : Off
-> Picture Mode change : Vidid -> Vivid(User)
(If you miss the upper condition, the coordinates of W/B
can be lower than the spec.)
5.4. Intelligent Sensor Inspection Guide
Step 1. Turn on the TV set.
Step 2. Press “EYE” button on the Adjustment remote control.
Step 3. Block the Intelligent Sensor module on the front C/A
about 6 seconds.
When the “Sensor Data” is lower than 20, you can see
the “OK” message -> If it doesn’t show “OK” message,
the Sensor Module is defected one.
You have to replace that with a good one.
Step 4. After check the “OK” message come out, take out your
hand from the Sensor module. -> Check “Sensor
Data” value change from “0” to “300” or not. 
If it doesn’t change the value, the sensor is also
defected one.
You have to replace it.
- 13 -
Coordinate 
Mode 
x y 
Temp uv∆
Cool 0.269±0.002 
0.273±0.002
13,000K  0.000
Medium 0.285±0.002 0.293±0.002
9,300K 
0.000
Warm 0.313±0.002 0.329±0.002
6,500K  0.003
Minute
Cool
Medium
Warm
1
0~4
276/289
293/308
318/338
2
5~9
276/288
293/307
319/337
3
10~14
275/286
292/305
318/335
4
15~24
274/284
291/303
317/333
5
25~39
273/282
290/301
316/331
6
40~49
272/280
289/298
315/329
7
50~79
270/277
287/295
314/326
8
80~
269/273
285/293
312/324
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