Adjustment Color Temperature (White Balance); Reference (White Balance Adj. Coordinate And Color Temperature) - LG 49LF6400-DA Service Manual

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5.2. Adjustment Color Temperature
(White balance)
● W/B Equipment condition
CA210 : CH 14, Test signal : Inner pattern (80IRE) – LED
Module
CH18 , Test signal : Inner pattern (80IRE) – ALEF
Module
● Above 5 minutes H/run in the inner pattern. ("power on" key of
adjust remote control)
※ The spec of color temperature and coordinate.
Cool (C50)
13,000k
All
Medium (0)
9,300k
Warm (W50)
6,500k
(1) RS-232C Command used during auto-adj.
RS-232C COMMAND
CMD
DATA
ID
Wb
00
00
Begin White Balance adj.
Wb
00
ff
End White Balance adj. (internal pattern
disappears )
5.2.1. Adjustment method
5.2.2. 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
5.2.3. Manual adjustment
5.2.3.1 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 à EZ adjust using adj. R/C -> 11. White-
Balance then press the cursor to the right (KEY►). When
KEY(►) is pressed 206 Gray internal pattern will be
displayed.
4) Adjust Cool modes
- Fix the one of R/G/B gain to 192 (default data) and
decrease the others.
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
X=0.271
(±0.002)
K
Y=0.270
(±0.002)
<Test signal>
X=0.286
- Inner pattern
(±0.002)
K
for W/B adjust
Y=0.289
- External white
(±0.002)
pattern
X=0.313
(±0.002)
K
Y=0.329
(±0.002)
Explanation
( If G gain is adjusted over 172 and R and B gain less than
192 , Adjust is O.K.)
- If G gain is less than 172,
Increase G gain by up to 172, and then increase R gain and
G gain same amount of increasing G gain.
- If R gain or B gain is over 255,
Readjust G gain less than 172, Conform to R gain is 255 or
B gain is 255
5) Adjust two modes (Medium / Warm) Fix the one of R/G/B
gain to 192 (default data) and decrease the others.
6) Adj. is completed, Exit adjust mode using "EXIT" key on
Remote controller
5.2.4. Reference (White Balance Adj. coordinate and
color temperature)
1) Luminance: 204 Gray, 80IRE
2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
5.2.5. Reference (White Balance Adj. coordinate and
color temperature)
1) Luminance: 204 Gray
2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
Coordinate
Mode
X
Cool
0.271
Medium
0.286
Warm
0.313
▪ St a n d a r d c o l o r c o o r d i n a t e a n d t e m p e r a tu r e u s in g
CA-210(CH-14) – by aging time
Normal line in Korea (From January to February) : LGD (LF5xxx,
LF6xxx, LF7xxx Series models)
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
- O/S Module(AUO, INX, Sharp, CSOT, BOE)
Cool
webOS
x
y
271
270
Target
278
280
- 17 -
Temp
Y
0.270
13,000K
0.289
9,300K
0.329
6,500K
Cool
Medium
X
Y
X
Y
271
270
286
289
313
286
295
301
314
328
284
290
299
309
326
282
287
297
306
324
279
283
294
302
321
276
278
291
297
318
274
275
289
294
316
273
272
288
291
315
272
271
287
290
314
271
270
286
289
313
Medium
Warm
x
y
x
285
293
313
293
299
320
LGE Internal Use Only
△uv
0.0000
0.0000
0.0000
Warm
X
Y
329
354
349
346
342
337
334
331
330
329
y
329
339

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