Adjustment Of White Balance - LG 32LG30 Service Manual

Ex) wb 00 00 : Start Auto-adjustment of white balance.
wb 00 10 : Start Gain Adjustment (Inner pattern)
ja 00 ff : Adjustment data
jb 00 c0 :
...
...
wb 00 1f : End of Gain adjustment
* (wb 00 20(start), wb 00 2f(end)) -> In the case of Off-
set adjustment
wb 00 ff : End of white balance adjustment
(3) Adjustment Map
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

5-4. Adjustment of White Balance

(Automatic Adjustment)
1) The adjustment condition should be set by the Power On
key.
2) Perform the zero calibration of the Color Analyzer and
place the probe close to the display center.
3) Connect the communication cable (RS-232C).
4) Select the desired model of the adjustment program and
perform the adjustment.
5) After the adjustment is ended (check the OK sign), check
the adjustment condition for each mode of the set.
(Warm, Medium, Cool)
6) Disconnect the probe and the communication cable to end
the adjustment.
* The adjustment should be started with "wb 00 00" and
ended with "wb 00 ff", and the offset should be adjusted
when necessary.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Data Range Default
(Hex.) (Decimal)
Cmd 2 Min Max
g 00 C0 TBD
h 00 C0 TBD
i 00 C0 TBD
TBD
TBD
TBD
a 00 C0 TBD
b 00 C0 TBD
c 00 C0 TBD
TBD
TBD
TBD
d 00 C0 TBD
e 00 C0 TBD
f 00 C0 TBD
TBD
TBD
5-5. Manual white Balance
1) The adjustment condition should be set by the Power On
key.
2) Press the ADJ of the R/C to enter into 'EZ-ADJUST'.
3) Select '10.TEST PATTERN' with the CH +/- key and press
the Enter key for 30 minutes or longer to perform the heat
run.
4) Perform the zero calibration of the Color Analyzer and fix
the sensor with the 10cm or less distance at the center of
the LCD module surface when adjusting.
5) Press the ADJ of the R/C to select '7.White-Balance' of the
Ez-Adjust and press the right arrow key(
adjustment mode. (As soon as you press '
entered into the full white inner pattern.)
6) Fix one of the R/G/B gains to 192 and decrease the
remaining two gains to adjust not to exceed 192.
7) The adjustment is done at three white balances of Cool,
Medium and Warm.
* The inner pattern is basically used, and if it is not possible,
the adjustment can be done by selecting the HDMI input.
NONE, INNER or HDMI can be selected by the bottom
option at the Ez Adjust Menu 7.White Balance menu and it is
set to INNER as default. If the adjustment cannot be done by
the inner pattern, select the HDMI to adjust.
* Adjustment environment and reference
1) Environment illuminance
Adjust it to 10 LUX or less at the place where the light
source such as lamp should be blocked at maximum.
2) Probe location
: Maintain the Color Analyzer (CA-210) close to the
module surface by 10cm or less and keep the probe of
the Color Analyzer perpendicular to the module
surface (80°~ 100°).
3) Aging time
- Keep the power on after the aging start (with no power
off) to perform the heat run for 15 minutes or longer.
- Make sure that the back light is turned on by using no
signal and the full white pattern or others.
5-6. Reference
(1) Brightness: Full white 216 Gray
(2) Standard color coordinate and white balance when using
the CS-1000
Mode Color Coordination
x
COOL 0.276
MEDIUM 0.285
WARM 0.313
(3) Standard color coordinate and white balance when using
the CA-210 (CH 10)
Mode Color Coordination
x
COOL 0.276±0.002
MEDIUM 0.285±0.002
WARM 0.313+0.002
- 12 -
G
) to enter into the
G
', the screen is
Temp ∆UV
y
0.283 11000K 0.0000
0.293 9300K 0.0000
0.329 6500K 0.0000
Temp
y
0.283±0.002 11000K 0.0000
0.293±0.002 9300K 0.0000
0.329±0.002 6500K 0.0000
LGE Internal Use Only
∆UV