LG 42LC46, Service Manual

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5) Auto-RGB OK means adjustment is completed.
Before adjusting White-balance , the AV
ADC should be done.
5. White Balance
* Test Equipment
Color Analyzer (CA-210/CH.9)
When you adjust LCD color temperature, on Color analyzer
(CA-210), you should use Channel 9 which is Matrix
compensated (White, Red, Green, Blue revised) by CS-
1000 and adjust in accordance with White balance
adjustment coordinate which is specified on the next..
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. -. In case of PDP: Measure and adjust after sticking the
Color Analyzer (CA-100+, CA-210 ) to the side of the
module.
-. In case of LCD: Adhere closely the Color Analyzer ( CA-
210 ) to the module less than 10cm distance, keep it with
the surface of the Module and Color Analyzer’s Prove
vertically.(80~100°).
3. Aging time
-. After aging start, keep the power on (no suspension of
power supply) and heat-run over 15 minutes.
-. In case of PDP, keep white pattern using inside pattern.
-. In case of LCD, using ‘no signal’ or ‘full white pattern’ or
the others, check the back light on.
5.1 Manual white Balance
One of R Gain / G Gain / B Gain should be kept on 80, and
others are controlled lowering from 80
1) Press 'power on' of the control R/C, set heat run to white
by pressing
G
, and heat run over 15 minutes
(Set: RS-233 Host: PC, Baud Rate: 115200bps, Download:
Cortez).
2) Zero Calibrate CA-210, and when controlling, stick the
sensor to the center of LCD module surface.
3) Double click In-start key on Controlling R/C and get in
‘white balance’.
4) Set test-pattern on and display inside pattern. Control is
carried out on three color temperature, COOL, MEDIUM,
WARM. (Control is carried out three times,)
5) When the R/G/B GAIN is 80 on OSD, it is the FULL
DYNAMIC Range of the Module. In order to control white
balance without the saturation of FULL DYNAMIC Range
and DATA, one of R Gain / G Gain / B Gain should be
kept on 80, and other two is controlled lowering from 80.
* Color Temperature: Cool, Medium, Warm
1. When R GAIN is set to 80
- Control G GAIN and B GAIN by lowering from 80.
2. When B GAIN is set to 80
- Control R GAIN and G GAIN by lowering from 80.
3. When G GAIN is set to 80
- Control R GAIN and B GAIN by lowering from 80.
One of R Gain / G Gain / B Gain should be kept on 80, and
adjust other two lower than 80.
(When R/G/B GAIN are all 80, it is the FULL DYNAMIC Range
of Module)