Read LG 42LW5700-TA / 42LW570Y-TA (CHASSIS:LB12C) Service Manual online
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A
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
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.
A
Adj. Map
4.3.5. Adjustment method
(1) Auto adjustment method
1) Set TV in adjustment mode using “POWER ON” key.
2) Zero calibrate probe then place it on the center of the
2) Zero calibrate probe then place it on the center of the
Display.
3) Connect Cable (RS-232C).
4) Select mode in adjustment program and begin adjustment.
5) When adjustment is completed(OK sign), check adjustment
4) Select mode in adjustment program and begin adjustment.
5) When adjustment is completed(OK sign), check adjustment
status pre mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adjustment.
A
W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
finish as end command “wb 00 ff”, and Adj. offset if need.
(2) Manual adj. method
1) Set TV in Adjustment mode using “POWER ON” key.
2) Zero Calibrate the probe of Color Analyzer, then place it
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 Adjustment remote
control -> 7. White-Balance then press the cursor to the
right (Key
right (Key
G
). (When key(
G
) is pressed 216 Gray internal
pattern will 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) Adjustment 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. 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.
A
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.
isolate adj. area into dark surrounding.
2) Probe location
: Color Analyzer(CA-210) probe should be within 10 cm
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
using no signal or Full-white pattern.
4.3.6. Reference (White Balance Adj. coordinate and
color temperature)
A
Luminance : 204 Gray
A
Standard color coordinate and temperature using CS-1000
(over 26 inch)
(over 26 inch)
A
Standard color coordinate and temperature using CA-210
(CH 9)
(CH 9)
ITEM
Command
Data Range(Hex.)
Default
Cmd 1
Cmd 2
Min
Max
(Decimal)
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
RS-232C COMMAND
Explanation
[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
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269 ± 0.002
0.273 ± 0.002 13000 K
0.0000
MEDIUM
0.285 ± 0.002
0.293 ± 0.002
9300 K
0.0000
WARM
0.313 ± 0.002
0.329 ± 0.002
6500 K
0.0000
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269
0.273
13000 K
0.0000
MEDIUM
0.285
0.293
9300 K
0.0000
WARM
0.313
0.329
6500 K
0.0000
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