LG 32LN57 Series Service Manual page 16

4.2.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using POWER ON 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 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.
(2) Manual adjustment. 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 10 cm 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 right key(►) is pressed 204 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) Adjustment is performed in COOL, MEDIUM, WARM 3
modes of color temperature.
▪ 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 204 Gray pattern.
▪ Adjustment 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
: Color Analyzer(CA-210) probe should be within 10 cm
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.
4.2.6. Reference (White balance Adj. coordinate and
color temperature)
▪ Luminance : 204 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
Coordinate
Mode
x
Cool 0.269
Medium 0.285
Warm 0.313
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Temp ∆uv
y
0.273 13000 K 0.0000
0.293 9300 K 0.0000
0.329 6500 K 0.0000
▪ Standard color coordinate and temperature using CA-210(CH 14)
Mode
x
Cool 0.269 ± 0.002
Medium 0.285 ± 0.002
Warm 0.313 ± 0.002
4.2.7. LED White balance table
- EDGE LED module change color coordinate because of
aging time.
- Apply under the color coordinate table, for compensated
aging time.
* Normal Line
[LN5xxx, LA6xxx, LA7xxx, LA8xxx]
Aging
NC4.0 time
(Min)
271
1 0-2 281
2 3-5 280
3 6-9 278
4 10-19 276
5 20-35 275
6 36-49 274
7 50-79 273
8 80-119 272
9 Over 120 271
*Aging Chamber
[LN5xxx, LA6xxx, LA7xxx, LA8xxx]
Aging
NC4.0 time
(Min)
271
1 0-5 280
2 6-10 276
3 11-20 272
4 21-30 269
5 31-40 267
6 41-50 266
7 51-80 265
8 81-119 264
9 Over 120 264
- 16 -
Coordinate
Temp
y
0.273 ± 0.002 13000 K 0.0000
0.293 ± 0.002 9300 K 0.0000
0.329 ± 0.002 6500K
Cool Medium
X y x y
270 285 293
287 295 310
285 294 308
284 292 307
281 290 304
277 289 300
274 288 297
272 287 295
271 286 294
270 285 293
Cool Medium
X y x y
270 285 293
285 294 308
280 290 303
275 286 298
272 283 295
268 281 291
265 280 288
263 279 286
261 278 284
260 278 283
LGE Internal Use Only
∆uv
0.0000
Warm
x y
313 329
320 342
319 340
317 339
315 336
314 332
313 329
312 327
311 326
310 325
Warm
x y
313 329
319 340
315 335
311 330
308 327
306 323
305 320
304 318
303 316
303 315