Edge Led White Balance Table; Oled White Balance; Oled White Balance Table; Local Dimming Function Check - LG 65UH950V Service Manual

5.1.7. EDGE LED White balance table

▪ Edge LED module change color coordinate because of
aging time
▪ apply under the color coordinate table, for compensated
aging time
Color Cool 0.256 0.271
Tem- 0.255 0.270
pera-
ture
(Set)
▪ (Normal line) White balance table
Gumi & Global
Cool
Aging
time x y
(Min)
271 270
1 0-2 282 289
2 3-5 281 287
3 6-9 279 284
4 10-19 277 280
5 20-35 275 277
6 36-49 274 274
7 50-79 273 272
8 80-119 272 271
9 Over 120 271 270

5.1.8. OLED White balance

5.2.8.1. Auto WB calibration & 10% window pattern brightness
check(HDR)
(1) Set TV in ADJ mode using P-ONLY key (or POWER ON
key)
(2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration before
adjustment.
(3) Connect RS-232C Cable
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode (Cool, Medium,
Warm, 10% window pattern brightness check)
(6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command "wb 00 00" , and
finish as end command "wb 00 ff", and Adj. offset if need

5.3.8.2. OLED White balance table

(1) Cool Mode
1) Purpose : Especially B-gain fix adjust leads to the
luminance enhancement. Adjust the color temperature
to reduce the deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Adjust the B gain more than 192 ( If R gain or
G gain is more than 255 , G gain can adjust less than
192 ) and change the others ( R/G Gain ).
3) Adjustment mode : mode – Cool
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
0.286 10,000K ** The W/B Tolerance
0.285 is ±0.015 for picture
quality by DQA.
(1) Video input: 204
Gray (80% of full
white pattern)
(2) Backlight UI
setting
- Cool (100), Medium
(100), Warm (100)
(3) Color temp UI
setting
- Warm (W50),
Medium (0),
Cool (C50)
Medium Warm
x y x
286 289 313
297 308 324
296 306 323
294 303 321
292 299 319
290 296 317
289 293 316
288 291 315
287 290 314
286 289 313
(2) Medium
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Fix the B gain to 192 (default data) and
decrease the others.
3) Adjustment mode : mode – Medium
(3) Warm
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Fix the W gain to 192 (default data) and
decrease the others.
3) Adjustment mode : mode – Warm
5.3.8.3. Reference (White Balance Adj. coordinate and color
temperature
(1) Luminance: 204 Gray, 80IRE
(2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
5.3.8.4. Reference (White Balance Adj. coordinate and color
y
temperature)
329
▪ Luminance: 204 Gray
348
▪ Standard color coordinate and temperature using CS-1000
346
(over 26 inch)
343
Mode
339
336
Cool 0.277
333
Medium 0.286
331
Warm 0.313
330
329
▪ Standard color coordinate and temperature using
CA-210(CH-17)
Mode
Cool 0.277±0.002
Medium 0.286±0.002
Warm 0.313±0.002

5.1.9. Local Dimming Function Check

(1) Turn on TV (Power only mode)
(2) Press TILT key on the Adj.Remote.
(3) check that Backlight move from left to right as below
picture.
(4) Press "exit" Key to stop Local dimming check.
- 22 -
Coordinate
x y
0.278 11,000K
0.289 9300K
0.329 6500K
Coordinate
x y
0.278±0.002 11000K
0.289±0.002 9300K
0.329±0.002 6500K
LGE Internal Use Only
Temp ∆uv
-0.0030
0.0000
+0.0030
Temp ∆uv
-0.0030
0.0000
+0.0030