Adjustment Method; Color Temperature - LG 49UF7600 Service Manual

5.5.5. Adjustment method

5.5.5.1. Auto WB calibration
(1) Set TV in adj. mode using POWER ONNY key
(2) Zero calibrate probe then place it on the center of the
Display
(3) Connect Cable (RS-232C to USB)
(4) Select mode in adj. Program and begin adj.
(5) When adj. is complete (OK Sign), check adj. status pre
mode(Warm, Medium, Cool)
(6) Remove probe and RS-232C to USB cable to complete adj.
▪ W/B Adj. must begin as start command "wb 00 00" , and
finish as end command "wb 00 ff", and Adj. offset if need
5.5.5.2. 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.

** R-fix adjustment
Adjust modes (Cool), Fix the R gain to 210 (default data) and
change the others (G/B Gain ).
- Adjust the R gain more than 210 ( If G gain or B gain is less
than 0 , R gain can adjust more than 210 ) 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
- PDP : Color Analyzer (CA-100, CA-100+, CA210) probe
should be firmly attached to the Module
- 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.
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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
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
(Normal line) Edge & ALEF LED White balance table
- gumi(Mar~Dec) & Global
Model : (normal line)LGD
Aging time
webOS
(Min)
1 0-2
2 3-5
3 6-9
4 10-19
5 20-35
6 36-49
7 50-79
8 80-119
9 Over 120
- 22 -
Temp
Y
0.270 13,000K
0.289 9,300K
0.329 6,500K
Temp
Y
0.270±0.002 13000K
0.289±0.002 9300K
0.329±0.002 6500K
Cool Medium
X Y X Y
271 270 285 293 313
281 287 295 310 320
280 285 294 308 319
278 284 292 307 317
276 281 290 304 315
275 277 289 300 314
274 274 288 297 313
273 272 287 295 312
272 271 286 294 311
271 270 285 293 310
LGE Internal Use Only
△uv
0.0000
0.0000
0.0000
△uv
0.0000
0.0000
0.0000
Warm
X Y
329
342
340
339
336
332
329
327
326
325