LG 40LH5300 Service Manual page 11

5.1.5. Adjustment method
5.1.5.1. Auto WB calibration
(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)
(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.
5.1.5.2. 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 -> 6. White-
Balance then press the cursor to the right (KEY►).
(When KEY(►) is pressed 204 Gray(80IRE) 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.
* CASE
First adjust the coordinate far away from the target value(x, y).
1. x, y > target
1) Decrease the R, G.
2. x, y < target
1) First decrease the B gain,
2) Decrease the one of the others.
3. x > target , y < target
1) First decrease B, so make y a little more than the target.
2) Adjust x value by decreasing the R
4. x < target, y > target
1) First decrease B, so make x a little more than the target.
2) Adjust x value by decreasing the G
► How to adjust
1.Fix G gain at least 172
Adjust R, B Gain ( In Case of Mostly Blue Gain Saturation)
2. When R or B Gain > 255, Release Fixed G Gain and
Readjust
* CASE Medium / Warm
First adjust the coordinate far away from the target value(x, y).
1. x, y > target
1) Decrease the R, G.
2. x, y < target
1) First decrease the B gain,
2) Decrease the one of the others.
3. x > target, y < target
1) First decrease B, so make y a little more than the target.
2) Adjust x value by decreasing the R
4. x < target, y > target
1) First decrease B, so make x a little more than the target.
2) Adjust x value by decreasing the G
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.1.6. Reference
(White Balance Adj. coordinate and color
temperature)
▪ Luminance: 204 Gray, 80IRE
**(normal line) Model : For LGD (LF54xx)
▪ Standard color coordinate and temperature using CA-210(CH
14) – by aging time
Aging time
L16 x
(Min)
271
1 0-2 281
2 3-5 280
3 6-9 279
4 10-19 277
5 20-35 275
6 36-49 273
7 50-79 272
8 80-119 271
9 Over 120 271
**(aging chamber) Model : For LGD (LF54xx)
▪ Standard color coordinate and
CA-210(CH-14) – by aging time
Aging time
L16 x
(Min)
271
1 0-2 280
2 3-5 276
3 6-9 272
4 10-19 269
5 20-35 267
6 36-49 266
7 50-79 265
8 80-119 264
9 Over 120 264
** For INX,AUO,SHARP,CSOT Module.( In the case of , the
color temperature spec of cool mode is 13000K)
Cool
x
spec 271
target 276
- 11 -
Cool Medium
y x y
270 286 289 313
285 296 304 323
284 295 303 322
282 294 301 321
279 292 288 319
275 290 294 317
273 288 292 315
272 287 291 314
270 286 289 313
270 286 289 313
temperature using
Cool Medium
y x y
270 286 289 313
285 295 304 319
280 291 299 315
275 287 294 311
272 284 291 308
268 282 287 306
265 281 284 305
263 280 282 304
261 279 280 303
260 279 279 303
med
y x y
270 286 289 313
277 291 296 318
LGE Internal Use Only
Warm
x y
329
344
343
341
338
334
332
331
329
329
Warm
x y
329
340
335
330
327
323
320
318
316
315
warm
x y
329
336