Read LG 47LA6400 / 47LA640Y (CHASSIS:LB33B) Service Manual online
- 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)
▪ Standard color coordinate and temperature using CA-210(CH 14)
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 Chamber
[LN5xxx, LA6xxx, LA7xxx, LA8xxx]
Mode
Coordinate
Temp
∆uv
x
y
Cool
0.269
0.273
13000 K
0.0000
Medium
0.285
0.293
9300 K
0.0000
Warm
0.313
0.329
6500 K
0.0000
Mode
Coordinate
Temp
∆uv
x
y
Cool
0.269 ± 0.002
0.273 ± 0.002 13000 K 0.0000
Medium 0.285 ± 0.002
0.293 ± 0.002 9300 K 0.0000
Warm
0.313 ± 0.002
0.329 ± 0.002
6500K 0.0000
NC4.0
Aging
time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-2
281
287
295
310
320
342
2
3-5
280
285
294
308
319
340
3
6-9
278
284
292
307
317
339
4
10-19
276
281
290
304
315
336
5
20-35
275
277
289
300
314
332
6
36-49
274
274
288
297
313
329
7
50-79
273
272
287
295
312
327
8
80-119
272
271
286
294
311
326
9
Over 120
271
270
285
293
310
325
NC4.0
Aging
time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-5
280
285
294
308
319
340
2
6-10
276
280
290
303
315
335
3
11-20
272
275
286
298
311
330
4
21-30
269
272
283
295
308
327
5
31-40
267
268
281
291
306
323
6
41-50
266
265
280
288
305
320
7
51-80
265
263
279
286
304
318
8
81-119
264
261
278
284
303
316
9
Over 120
264
260
278
283
303
315
Click on the first or last page to see other 47LA6400 / 47LA640Y (CHASSIS:LB33B) service manuals if exist.