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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Before 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 controller for adjustment
(2) Color Analyzer (CS-1000, CA-100,100+,CA-210 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) 15 Pin D-Sub Jack(RGB) is connected to the AUTO W/B
EQUIPMENT.
9-2. AUTO White Balance Process.
Adjust Process will start by execute I2C Command (Inner
pattern (0xF3, 0xFF)).
O
Color temperature standards according to CSM and Module
O
CS-1000/CA-100+/CA-210(CH 10) White balance
adjustment coordinate and color temperature
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 “
G
” key at “3. W/B
ADJUST”.
PC (for communication through RS-232C) ==> UART Baud
rate : 115200 bps
9-4. Connecting Picture of the Measuring
Instrument
(On Automatic control )
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.
[
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 aging start, keep the Power on (no suspension of
power supply) and heat-run over 15 minutes
O
Auto adjustment Map(I2C)
(1) I2C (100K BPS)
(2) COMMUNICATION START
#Until ACK BIT goes LOW, Repeat it.
(3) Command form.
Command form use DDC2AB standard communication
protocol.
a. LEN: DATA BYTE number to send.
b. CMD: Command language that monitor executes.
c. VAL: FOS DATA
d. CS: Dada’s CHECHSUM that transmit
e. DELAY: 50MS
f. A: Acknowledge
<Fig. 6> Connection Diagram of Auto W/B Adjustment
