LG 52LB9DF (CHASSIS:LB75A) Service Manual ▷ View online
6-4. White Balance adjustment (For manual
adjustment)
A. Color Analyzer : CA-210
When adjusting the plasma white balance, channel No. 9 with
Matrix adjustment (White, Red, Green, Blue adjustment) with
CS-1000 must be used for the color analyzer (CA-210), and it
must be adjusted in accordance with the white balance
adjustment coordinate shown below.
Matrix adjustment (White, Red, Green, Blue adjustment) with
CS-1000 must be used for the color analyzer (CA-210), and it
must be adjusted in accordance with the white balance
adjustment coordinate shown below.
B. Manual adjustment is executed in the following order.
(A) Press the ADJ button of the adjustment R/C to enter 'EZ-
(A) Press the ADJ button of the adjustment R/C to enter 'EZ-
ADJUST'.
(B) Press 9.TEST PATTERN with the CH + / - KEY and execute
the HEAT RUN for more than 30 minutes by pressing the
Enter KEY.
Enter KEY.
(C) Do a zero calibration for CA-210 and set it at a distance less
than 10Cm at the center of the LCD module surface.
(D) Press the ADJ button of adjustment R/C to select '6.White-
Balance' of 'Ez-Adjust', and press the right KEY (
) to enter
the adjustment mode.
(When you press the
(When you press the
button, it switches to Full White inner
pattern.)
(E) Adjustment is done in three white balance of COOL,
MEDIUM and WARM.
(F) When white balance is Cool,
Set to B Gain 192 and set to R-Cut / G-Cut / B-Cut 64
Make High Light adjustment using R Gain / G Gain.
When white balance is Medium,
Set to R Gain 192 and set to R-Cut / G-Cut / B-Cut 64
Make High Light adjustment using G Gain / B Gain.
When white balance is Warm
Set to R Gain 192 and set to R-Cut / G-Cut / B-Cut 64
Make High Light adjustment using G Gain / B Gain.
Make High Light adjustment using R Gain / G Gain.
When white balance is Medium,
Set to R Gain 192 and set to R-Cut / G-Cut / B-Cut 64
Make High Light adjustment using G Gain / B Gain.
When white balance is Warm
Set to R Gain 192 and set to R-Cut / G-Cut / B-Cut 64
Make High Light adjustment using G Gain / B Gain.
(G) Use +, - KEY to adjust the volume.
(H) When the adjustment is completed, press the OK (
(H) When the adjustment is completed, press the OK (
KEY)
button to move to the Ez-Adjust screen. Press the ADJ KEY
to exit the adjustment mode.
to exit the adjustment mode.
- Reference : White Balance adjustment coordinate and white
balance
a) Standard white balance and standard color coordinate
chart when measuring using CS-1000 device
COOL : T=11000K,
uv=0.000, x=0.276 y=0.283
MEIDUM : T=9300K,
uv=0.000, x=0.285 y=0.293
WARM : T=6500K,
uv=0.000, x=0.313 y=0.329
b) Color coordinate chart when using CA-210 CH 9
* Brightness: Full white 216 gray
6-5. Video Set adjustment
This is the adjustment to reduce the color gap between the RF
and Video signal, and the adjustments can be made for Analog
RF, AV-PAL and AV-NTSC.
and Video signal, and the adjustments can be made for Analog
RF, AV-PAL and AV-NTSC.
6-5-1. Analog RF and AV-PAL adjustment method
(A) Connect the Video Signal Generator (Master) to the TV
AV input terminal as AV output. If you enter the input
pattern, at this time, as Model: 202(PAL) and Pattern: 33
(100% color Bar), the following screen will be displayed.
pattern, at this time, as Model: 202(PAL) and Pattern: 33
(100% color Bar), the following screen will be displayed.
< Model : 202(PAL) , Pattern : 33(100% color Bar) >
* Because the top pattern can differ due to the gap of the model
and pattern depending on the used device, it must be checked.
(B) After entering the internal signal and checking signal receipt,
press the ADJ KEY on the adjustment to enter 'EZ-ADJUST'.
Select '3. Adjust RF and AV_PAL' and press the right KEY
(
Select '3. Adjust RF and AV_PAL' and press the right KEY
(
) to enter the adjustment mode.
(C) When you enter the adjustment mode, the video is
automatically switch to TV 3CH, and the following window will
be displayed.
be displayed.
(D) When automatic adjustment starts, the main screen is
adjusted and the message saying 'RF-PAL Configuration
Success' will be displayed. If the adjustment fails, a message
saying 'RF-PAL Configuration Fail' will be displayed.
Success' will be displayed. If the adjustment fails, a message
saying 'RF-PAL Configuration Fail' will be displayed.
(E) When the automatic adjustment of RF signal is completed, it
will automatically switch to AV1 mode to execute automatic
adjustment for AV-PAL. When automatic adjustment is
completed, you will see a message saying 'AV-PAL
Configuration Success'. If the adjustment fails, you will see a
message saying 'AV-PAL Configuration Fail'
adjustment for AV-PAL. When automatic adjustment is
completed, you will see a message saying 'AV-PAL
Configuration Success'. If the adjustment fails, you will see a
message saying 'AV-PAL Configuration Fail'
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6-5-2. AV NTSC adjustment method
(A) Connect the Video Signal Generator (Master) to the AV
input terminal as AV output. At this time, If you enter the
input pattern, at this time, as Model: 201(NTSC) and
Pattern: 33 (100% color Bar), the following screen will be
displayed
input pattern, at this time, as Model: 201(NTSC) and
Pattern: 33 (100% color Bar), the following screen will be
displayed
< Model : 201(NTSC) , Pattern : 33(100% color Bar) >
* Because the top pattern can differ due to the gap of the model
and pattern depending on the used device, it must be checked.
(B) Press the ADJ KEY on the adjustment to enter 'EZ-
ADJUST'. Select '4. Adjust AV_NTSC' and press the right
KEY (
KEY (
) to enter the adjustment mode.
(C) When the automatic adjustment is completed, you will see
a message saying 'AV-NTSC Configuration Success'. If
the adjustment fails, you will see a message saying 'AV-
NTSC Configuration Fail'
the adjustment fails, you will see a message saying 'AV-
NTSC Configuration Fail'
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TROUBLESHOOTING & BLOCK DIAGRAM
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