LG 55LW9500 Service Manual page 12

RS-232C Command used during auto-adjustment.
A
RS-232C COMMAND
[CMD ID DATA]
wb 00 00 Begin White Balance adj.
wb 00 10 Gain adj.(internal white pattern)
wb 00 1f Gain adj. completed
wb 00 20 Offset adj.(internal white pattern)
wb 00 2f Offset adj. completed
wb 00 ff End White Balance adj.(Internal pattern disappears)
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
A
ITEM Command
Cmd 1
Cool R-Gain j
G-Gain j
B-Gain j
R-Cut
G-Cut
B-Cut
Medium R-Gain j
G-Gain j
B-Gain j
R-Cut
G-Cut
B-Cut
Warm R-Gain j
G-Gain j
B-Gain j
R-Cut
G-Cut
4.3.5. 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)
4) Select mode in adj. Program and begin adjustment.
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
A
finish as end command "wb 00 ff", and Adj. offset if need.
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Explanation
Data Range(Hex.)
Cmd 2 Min Max
g 00 C0
h 00 C0
i 00 C0
a 00 C0
b 00 C0
c 00 C0
d 00 C0
e 00 C0
f 00 C0
(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 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 KEY(
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.
A 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 216 Gray pattern.
Adj. condition and cautionary items
A
1) Lighting condition in surrounding area
2) Probe location
Default
(Decimal)
3) Aging time
4.3.6. Reference (White Balance Adj. coordinate and
color temperature)
Luminance : 204 Gray
A
A Standard color coordinate and temperature using CS-1000
(over 26 inch)
Mode
COOL
MEDIUM
WARM
Standard color coordinate and temperature using CA-210
A
(CH 9)
Mode
COOL
MEDIUM
WARM
- 12 -
) is pressed 216 Gray internal pattern will
G
Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.
: Color Analyzer (CA-210) probe should be within 10
cm and perpendicular of the module surface (80° ~
100°)
- 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.
Color Coordination
x y
0.269 0.273
0.285 0.293
0.313 0.329
Color Coordination
x y
0.269 ± 0.002 0.273 ± 0.002 13000 K
0.285 ± 0.002 0.293 ± 0.002
0.313 ± 0.002 0.329 ± 0.002
).
G
Temp ∆UV
13000 K 0.0000
9300 K 0.0000
6500 K 0.0000
Temp ∆UV
0.0000
9300 K 0.0000
6500 K 0.0000
LGE Internal Use Only