LG 60PC1D Service Manual page 9

9. Adjustment of White Balance
9-1. Required Equipment
(1) Color analyzer (CA-100 or similar product)
(2) Automatic adjustor (with automatic adjustment hour
necessity and the RS-232C communication being possible)
9-2. Connection Diagram of Equipment
for Measuring
216 FULL WHITE
<Fig. 6> Connection Diagram of Automatic Adjustment
9-3. 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 Automatic adjustment of white balance start.
Wb 00 10 The start of gain adjustment.(inside pattern)
Ja 00 ff Adjustment Date.
Jb 00 c0
...
Wb 00 1f The end of gain adjustment.
As occasion demands , adjust the offset.
( Wb 00 20(Start) , Wb 00 2f(end))
Wb 00 ff Automatic adjustment of white balance end.
(Disappear the inside pattern)
Caution) When you adjust, automatically, RS-232C
Command is used.
00
wb 00 Automatic adjustment of white balance start.
wb 00 10
The start of gain adjustment.(inside white pattern)
wb 00
1f The end of gain adjustment.
wb 00
20 The start of Offset adjustment.(inside white pattern)
wb 00
2f The end of Offset adjustment.
00
wb ff
Automatic adjustment of white balance end.
(Disappear the inside pattern)
(Automatic Adjustment)
COLOR
ANALYZER
TYPE; CA-100
CVBS Part
PDP MONITOR
[ [ RS-232C Command
RS-232C COMMAND
[CMD ID DATA]
Cool Mid Warm
R Gain Jg Ja
G Gain Jh Jb
B Gain Ji Jc
R Offset lp lj
G Offset lq lk
B Offset lr ll
9-4. Adjustment of White Balance
(Automatic Adjustment)
Calibrate of the CA-100, then attach sensor to PDP module
O
surface when you adjust.
Manual adjustment is also possible by the following sequence.
O
(1) HEAT RUN at least 30 minutes by pressing the Power only
Key on the Service Remote Control and adjust. and use
power only or tint key and establish BaudRate to 115200.
(2) It must start " 00 00", complete "wb 00 ff".
(3) Adjust offset.
9-5. Adjustment of White Balance
(Passivity Adjustment)
(1) HEAT RUN at least 30 minutes by pressing the '7. White-
Pattern' on the Service Remote Control and adjust.
(2) After attaching sensor to center of screen, select '6. White-
Balance' of 'Ez - Adjust' by pressing the ADJ KEY on the
Service R/C. Then enter adjustment mode by pressing the
Right KEY (G). This time white pattern is displayed.
(3) When fix R GAIN in 192,
- make the adjustment reducing the value of G GAIN and
B GAIN less than 192.
When fix G GAIN in 192,
- make the adjustment reducing the value of R GAIN and B
GAIN less than 192.
When fix B GAIN in 192,
- make the adjustment reducing the value of R GAIN and G
GAIN less than 192.
* Fix : R OFFSET=64, G OFFSET=64, B OFFSET=64
(4) Adjust using Volume +/- KEY.
Value of bright : High Level -> 216gray
[Cool]
X; 0.276±0.002 Y; 0.282±0.002
Color temperature: 11000°K ±1000°K
dUV: -3dUV
[Medium]
X; 0.285±0.002 Y; 0.294±0.002
Color temperature: 9300°K±1000°K
dUV: -3dUV
[Warm]
X; 0.314±0.002 Y; 0.323±0.002
Color temperature: 6300°K±1000°K
dUV: -3dUV
(5) Move the the Ez-Adjust screen by pressing the
and exit the adjustment mode by pressing the ADJ KEY.
(Automatic Adjustment)
CENTER
(DEFAULT)(Hex)
Min
Cool Mid
Jd 00 C0 C0
Je 00 C0 C0
Jf 00 C0 C0
Lm 00 40 40
Lm 00 40 40
Lo 00 40 40
Max
(Hex)
Warm
C0 D0
C0 D0
C0 D0
40 7f
40 7f
40 7f
KEY
V