Adjustment Of White Balance - LG 42LG30 Service Manual

(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.
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.
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
Data Range Defaulta
(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
G
) to enter into the
G
', the screen is
* 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
5-7. HDCP (High-Bandwidth Digital Contents Protection) SETTING
• Set write size to 64 bytes
• Set delay time to 250ms
• Connect D-sub Signal Cable to D-Sub Jack
• Input HDCP key with HDCP-key- in-program
• HDCP Key value is stored on EEPROM(AT24C512) which is
80~A1 addresses o 0xA0~0xA2 page
• AC off/ on and on HDCP button of MSPG925 and confirm
whether picture is displayed or not of using MSPG925
• HDCP Key value is different among the sets.
- 13 -
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