LG 32LC7D Service Manual page 11

7. Adjustment of White Balance
7-1. Required Equipment
(1) Color analyzer (CA-210 or similar product)
(2) Automatic adjustor (with automatic adjustment hour
necessity and the RS-232C communication being possible)
7-2. Connection Diagram of Equipment
for Measuring
216 FULL WHITE
7-3. Process of automatic adjustment
(1) As using the white pattern for adjustment the inner part,
HDMI connection need not. But as lower part, the RS-232C
Command is used.
Wb 00 00 start of automatic adjustment the white balance.
Wb 00 10 Start of gain adjustment.(inside pattern)
Ja 00 ff Adjustment Date.
Jb 00 c0
...
Wb 00 1f Ending gain adjustment.
As occasion demands , adjust the offset.
( Wb 00 20(Start) , Wb 00 2f(end))
Caution) When you adjust automatically, RS-232C
Command is used.
* Baud Rate : 115200
[ RS-232C Command
(Automatic Adjustment)
RS-232C COMMAND
[CMD ID DATA]
Cool Mid Warm
R Gain jg ja
G Gain jh jb
B Gain ji jc
R Offset
G Offset
B Offset
- Operate the automatic adjustment by using 'power only' key
on service remote control. And set the Baud Rate to 115200.
- It must start to "wb 00 00", complete to "wb 00 ff".
- Adjust offset.
(Automatic Adjustment)
COLOR
ANALYZER
TYPE; CA-210
HDMI signal input
Window
LCD TV part
MSPG-925 series
CENTER
(DEFAULT)(Hex)
Min
Cool Mid Warm
jd 00 C0 C0
je 00 C0 C0
jf 00 C0 C0
3F 3F
40 40
40 40
7-4. Adjustment of White Balance
(Passivity Adjustment)
Operate Zero Calibration of the CA-210.
O
Manual adjustment is also possible by the following sequence.
O
(1) Enter to '7. White-Balance' by pressing the ADJ key on the
service remote control.
(2) Select Test Pattern White with ADJ key and HEAT RUN at
least 15 minutes.
(3) Select picture control condition to 'Dynamic'.
Stick the sensor on center of screen. And select '6.White-
Balance of 'Ez- Adjust' with ADJ key on service remote
control and Enter to adjustment mode by pressing right
G
key(
(4) Adjust with Volume ± key.
- Value of bright : High Level -> 216gray
[Cool]
Color coordinates : X; 0.272±0.015 Y; 0.278±0.015
Color temperature: 12000°K ±1000°K
dUV: ±0dUV
[Medium]
Color coordinates : X; 0.285±0.015 Y; 0.293±0.015
Color temperature: 9300°K±1000°K
dUV: ±0dUV
[Warm]
Color coordinates : X; 0.313±0.015 Y; 0.329±0.015
Color temperature: 6500°K±1000°K
dUV: ±3dUV
(5) After adjustment is completed, move to 'Ez-Adjust' by
pressing
ADJ key.
Max
C0 FE
C0 FE
C0 FE
3F 7f
41 7f
41 7f
- 11 -
).
A
key exit the adjustment mode by pressing the