Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.1.4. Adj. Command (Protocol)
▪ RS-232C Command used during auto-adjustment.
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f → Gain adj. completed
*(wb 00 20(Start), wb 00 2f(end)) → Off-set adj.
wb 00 ff → End white balance auto-adj.
▪ Adj. Map
5.1.5. Adj. method
5.1.5.1 Auto WB calibration
1) Set 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 nish as end command “wb 00 ff”, and Adj. offset
if need
5.1.5.2 Manual adjustment Method.
1) Set 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 → White-
Balance then press the cursor to the right (KEY►). When
KEY (►) is pressed 204 Gray (80IRE) internal patterns will
be displayed.
4) Adjust Cool modes
- Fix the one of R/G/B gain to 192 (default data) and
decrease the others. ( 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) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
6) Adj. is completed, Exit adjust mode using “EXIT” key on
Remote controller.
▪ If internal pattern is not available, use RF input. In
EZ Adj. menu 6.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 206
Gray pattern.
5.1.5.3 Adj. 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: CA-210 probe should be within 10cm 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 us-
ing no signal or Full-white pattern.
5.1.6. Reference (White balance Adj. coordinate and
color temperature)
▪ Luminance : 204 Gray (80IRE)
▪ Standard color coordinate and temperature using CA-210 (CH14)
: [applied only LGD Module]
▪ Standard color coordinate and temperature using CA-210(CH
14) – by aging time
1) Egde LED models (applied only LGD Module) in LGEKR
(GUMI) And LGERS
RS-232C COMMAND
[CMD ID DATA]
Explantion
wb 00 00 Begin White Balance adjustment
wb 00 ff
End White Balance adjustment
(internal pattern disappears )
Adj. item
Command
(lower caseASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1 CMD2 MIN MAX
Cool
R Gain j G 00 C0
G Gain j H 00 C0
B Gain j I 00 C0
R Cut
G Cut
B Cut
Medium
R Gain j A 00 C0
G Gain j B 00 C0
B Gain j C 00 C0
R Cut
G Cut
B Cut
Warm
R Gain j D 00 C0
G Gain j E 00 C0
B Gain j F 00 C0
R Cut
G Cut
B Cut
Mode
Coordinate
Temp ∆uv
x y
Cool 0.271±0.002 0.270±0.002 13,000K -0.003
Medium 0.286±0.002 0.289±0.002 9,300K 0.0000
Warm 0.313±0.002 0.329±0.002 6,500K 0.0000
Net
Cast
3.0
Aging time
(Min)
Cool Medium Warm
X y x y x y
271 270 286 289 313 329
1 0-2 276 278 291 297 318 337
2 3-5 275 276 290 295 317 335
3 6-9 274 275 289 294 316 334
4 10-19 273 274 288 293 315 333
5 20-35 272 273 287 292 314 332
6 36-49 272 272 287 291 314 331
7 50-79 271 271 286 290 313 330
8 80-119 271 270 286 289 313 329
9 Over 120 271 270 286 289 313 329
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