LG 65UH7650 Service Manual page 22

5.5.5.2. Manual adj. method
(1) Set TV in Adj. mode using POWER ON
(2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface..
(3) Press ADJ key -> EZ adjust using adj. R/C -> 7. White-
Balance then press the cursor to the right (KEY►).
(When KEY(►) is pressed 216 Gray internal pattern will be
displayed)
(4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
(5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
** G-fix adjustment
Adjust modes (Cool), Fix the G gain to 172 (default data) and
change the others (G/B Gain ).
Adjust two modes(Medium / Warm), Fix the one of R/G/B gain
to 192 (default data) and decrease the others.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 7.White Balance, you can select one of 2 Test-pattern:
ON, OFF. Default is inner(ON). By selecting OFF, you can
adjust using RF signal in 216 Gray pattern.
▪ Adj. condition and cautionary items
(1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to isolate
adj. area into dark surrounding.
(2) Probe location
- LCD : Color Analyzer (CA-210) probe should be within
10cm and perpendicular of the module surface
(80°~ 100°)
(3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked using no
signal or Full-white pattern.
5.5.6. Reference (White Balance Adj. coordinate and
color temperature)
▪ Luminance: 206 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
Coordinate
Mode
X
Cool 0.271
Medium 0.283
Warm 0.313
▪ Standard color coordinate and temperature using CA-210
(CH 14)
Coordinate
Mode
X
Cool 0.271±0.002
Medium 0.286±0.002
Warm 0.313±0.002
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Temp
△uv
Y
0.270 13,000K 0.0000
0.289 9,300K 0.0000
0.329 6,500K 0.0000
Temp
Y
0.270±0.002 13000K
0.289±0.002 9300K
0.329±0.002 6500K
5.5.7. EDGE & IOL LED White balance table
▪ Edge & ALEF LED module change color coordinate because
of aging time
▪ apply under the color coordinate table, for compensated
aging time
▪ Luminance: 204 Gray, 80IRE
** Except Gumi winter season(Jan~Feb) and except for winter
season (Mar ~ Dec) & Global are same as the table below
▪ Standard color coordinate and temperature using
CA-210(CH-14) – by aging time
Aging time
(Min)
1
2
3
4 10-19
5 20-35
6 36-49
7 50-79
8 80-119
9 Over 120
* Use only AUO, INX, Sharp, CSOT, BOE
(Cool temp Spec is 13000K)
spec
target
5.6. Local Dimming Function Check
(Step 1) Turn on TV
(Step 2) At the Local Dimming mode, module Edge Backlight
moving right to left
Back light of IOP module moving
(Step 3) confirm the Local Dimming mode
(Step 4) Press "exit" Key
△uv
0.0000
0.0000
0.0000
- 22 -
Cool Medium
X Y X
271 270 286
0-2 282 289 297
3-5 281 287 296
6-9 279 284 294
277 280 292
275 277 290
274 274 289
273 272 288
272 271 287
271 270 286
cool med
x y x
271 270 285 293
278 280 293 299
Warm
Y X Y
289 313 329
308 324 348
306 323 346
303 321 343
299 319 339
296 317 336
293 316 333
291 315 331
290 314 330
289 313 329
warm
y x y
313 329
320 339
LGE Internal Use Only