LG Electronics 37LN54**-Z* 4. Total Assembly line process

Only for training and service purposes

4. Total Assembly line process

4.1. White Balance adjustment

▪ W/B Equipment condition

CA210 : LED -> CH14, Test signal: Inner pattern(80IRE)

▪ Above 5 minutes H/run in the inner pattern. (“power on” key

of adjust remote control)

▪ If it is executed W/B adjustment in 2~3 minutes H/run, it is

adjusted by Target data.

(For OS LED / Direct LED module)

▪ Normal line

* Aging chamber

* Connecting picture of the measuring instrument

(On Automatic control)

Inside PATTERN is used when W/B is controlled. Connect to

auto controller or push Adjustment R/C POWER ON →

Enter the mode of White-Balance, the pattern will come out.

* Auto-control interface and directions

(1) Adjust in the place where the influx of light like floodlight

around is blocked. (illumination is less than 10 lux).

(2) Adhere closely the Color analyzer(CA210) to the module

less than 10 cm distance, keep it with the surface of the

Module and Color analyzer's prove vertically.(80° ~ 100°).

(3) Aging time

- After aging start, keep the power on (no suspension of

power supply) and heat-run over 5 minutes.

- Using 'no signal' or 'POWER ONLY' or the others, check

the back light on.

▪ Auto adjustment Map(using RS-232C to USB cable)

RS-232C COMMAND

[CMD ID DATA]

Wb 00 00 White Balance Start

Wb 00 ff White Balance End

Color Temperature : COOL, Medium, Warm.

One of R Gain/G Gain/ B Gain should be kept on 0xC0, and

adjust other two lower than C0.(When R/G/B Gain are all

C0, it is the FULL Dynamic Range of Module)

* Manual W/B process using adjust Remote control.

▪ After enter Service Mode by pushing "ADJ" key,

▪ Enter White Balance by pushing "►" key at "8. White

Balance".

* CASE Cool Mode

First adjust the coordinate far away from the target

value(x, y).B.

1) x, y > target

2) x, y < target

3) x >target, y < target

4) x < target, y > target

- Every 4 case have to fit y value by adjusting B Gain

and then fit x value by adjusting R-Gain.

- In this case, increasing/decreasing of B Gain and R

Gain can be adjusted.

Mode Temp Coordinate spec Target

Cool 13,000 K X=0.269 (±0.002)

Y=0.273 (±0.002)

X=0.271

Y=0.276

Medium 9,300 K X=0.285 (±0.002)

Y=0.293 (±0.002)

X=0.287

Y=0.296

Warm 6,500 K X=0.313 (±0.002)

Y=0.329 (±0.002)

X=0.315

Y=0.332

NetCase4 Aging time

(Min)

Cool Medium Warm

Xyxyxy

269 273 285 293 313 329

1 0-2 280 287 296 307 320 337

2 3-5 279 285 295 305 319 335

3 6-9 277 284 293 304 317 334

4 10-19 276 283 292 303 316 333

5 20-35 274 280 290 300 314 330

6 36-49 272 277 288 297 312 327

7 50-79 271 275 287 295 311 325

8 80-119 270 274 286 294 310 324

9 Over 120 269 273 285 293 309 323

Full White Pattern CA-210

COLOR

ANALYZER

TYPE : CA-210

RS-232C Communication

RS-232C COMMAND

[CMD ID DATA] MIN

CENTER

(DEFAULT) MAX

Cool Mid Warm Cool Mid Warm

R Gain jg Ja jd 00 172 192 192 192

G Gain jh Jb je 00 172 192 192 192

B Gain ji Jc jf 00 192 192 172 192

R Cut 64 64 64 128

G Cut 64 64 64 128

B Cut 64 64 64 128

NetCase4 Aging time

(Min)

Cool Medium Warm

Xyxyxy

269 273 285 293 313 329

1 0-2 276 282 292 302 316 332

2 3-5 274 280 290 300 314 330

3 6-9 273 278 289 298 313 328

4 10-19 272 276 288 296 312 326

5 20-35 271 274 287 294 311 324

6 36-49 270 272 286 292 310 322

7 50-79 266 269 282 289 306 319

8 80-119 264 267 280 287 304 317

9 Over 120 263 266 279 286 303 316

EZ ADJUST

0. Tool Option1

1. Tool Option2

2. Tool Option3

3. Tool Option4

4. Tool Option5

5. Tool Option Commercial

6. Country Group

7. Area Option

8. ADC Calibration

9. White Balance

10. 10 Point WB

11. Test Pattern

12 EDID D/L

13. Sub B/C

14. Ext. Input Adjust

Whit Balance

Color Temp. ◄ ►

R-Gain

G-Gain

B-Gain

R-Cut

G-Cut

B-Cut

Test-Pattern

Backlight

Reset To Set

Cool

172

192

100