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LG 50PG60D Service Manual page 9

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* Befor adjusting White-balance, the AV ADC should be done.
If ADC status were "NG", Need to ADC adjustment.
9. Adjustment of White Balance
9-1. Required Equipment
(1) Remote control for adjustment.
(2) Color Analyzer (CA-1000, CA-100,100+, CA210 or same
product.) : CH 10(PDP)
* Please adjust CA-210, CA-100+ by CS-1000 before
measuring
(3) Auto W/B adjustment instrument.(only for Auto adjustment)
(4) AV Pattern Generator.
(5) 15Pin D-Sub Jack(RGB) is connected to the AUTO W/B
Equipment.
9-1. Required Equipment
Adjust Process will start by execute I2C Command(Inner
pattern (0xF3, 0xFF)
W
Color temperature standards according to CSM and Module.
CSM
PLASMA
Cool
11000K
Normal
9300K
Warm
6500K
W
CS-1000/CA-100+/CA-210(CH 10) White balance adjustment
coordinate and color temperature.
Color Coordinate
CSM
x
COOL
0.276±0.002
MEDIUM
0.285±0.002
WARM
0.313±0.002
* PC(for communication through RS-232C)
-> UART Baud rate : 115200 bps
9-3. Manual W/B Process
(Using adjusts Remote control)
(1) After enter Service Mode by pushing "ADJ" key.
(2) Enter White Pattern off of service mode, and change
off -> on.
(3) Enter "W/B ADJUST" by pushing "
9-4. Connection Picture of the Measuring
Instrument(On Automatic control)
(1) Inside PATTERN is used when W/B is controlled. Connect
to auto controller or push control R/C IN-START -> Enter
the mode of White-Balance, the pattern will come out.
Full White Pattern
RS-232C Communication
(Fig.6) Auto AV(CVBS) Color Balance Test Pattern
Copyright©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Remark
Temp
y
0.283±0.002
11,000K
0.293±0.002
9,300K
0.329±0.002
6,500K
G
" key at "3.W/B ADJUST".
CA-210
Color
ANALYZER
TYPE : CA-210
9-5. Auto-control interface and directions
(1) Adjust in the place where the influx of light like floodlight
around is blocked.(illumination is less than 10ux)
(2) Measure and adjust after sticking the Color Analyzer(CA-
100+, CA210) to the side of the module.
(3) Aging time
- After ajing start, keep the power on(no suspension of
power supply) and heat-run over 15minutes.
- keep white pattern using inside pattern.
Auto adjustment Map(I2C)
V
- I2C(100K BPS)
10. Communication START
START
* Until ACK BIT goes LOW, Repeat it.
11. Command form
Command form use DDC2AB standard communication
V
protocol.
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP
1. LEN : DATA BYTE number to send.
2. CMD : Command language that monitor executes.
3. VAL : FOS DATA
4. CS : Dada's CHECKSUM that transmit.
5. DELAY : 50MS
6. A : Acknowledge.
uv
0.000
0.000
0.003
- 9 -
6E
A
STOP
50Ms
LGE Internal Use Only

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