LG 42PJ650, Service Manual

Page: 9 / 33

9-2. Change Target Luminance and Range
of the Auto Adjustment W/B Equipment
9-3. White Balance Adjustment Coordinate
and Color Temperature
9-3. White Balance Adjustment Coordinate
and Color Temperature
[
PC (for communication through RS-232C) ? UART Baud
rate : 115200 bps
9-4. Automatic W/B Adjustment
(1) Internal PATTERN should be used when W/B is adjusted.
Connect to auto controller like below.
(2) Start White-Balance adjustment, then the full white window
pattern will appear on the screen.
(3) Adjust in the place where the influx of light like floodlight
around is blocked.
(illumination is less than 10ux).
(4) Measure and adjust after sticking the Color Analyzer (CA-
100+, CA210 ) to the side of the module.
O
Auto W/B Adjustment Map(RS-232C)
RS-232C COMMAND
[ CMD ID DATA ]
Wb 00 00 White Balance Start
Wb 00 FF White Balance End
9-5. Manual W/B Adjustment
(1) Execute the zero calibration of CA-100+ / CA-210.
(2) Press the ‘ADJ’ button on a service R/C and enter EZ
ASJUST by selecting ‘6. White Balance’.
(3) Then, 216 gray pattern will appear on the screen.
(4) Change the R/G/B-Gain as passing in 3 color coordinates
and temperatures, COOL, MEDIUM and WARM.
< Temperature: COOL >
- R-Cut / G-Cut / B-Cut is set to 64
- Control R-Gain and G-Gain.
- Each gain is limited to 192
< Temperature: MEDIUM >
- R-Cut / G-Cut / B-Cut is set to 64
- Control R-Gain and G-Gain.
- Each gain is limited to 192
< Temperature: WARM >
- R-Cut / G-Cut / B-Cut is set to 64
- Control G-Gain and B-Gain.
- Each gain is limited to 192
(5) Press ‘EXIT’ button on a service R/C
- 9 - LGE Internal Use Only Copyright ©2010 LG Electronics Inc. All rights reserved.
Only for training and service purposes
20 Range
50 Target luminance
20 Range
50 Target luminance
128 64 64 64 B C ut
128 64 64 64 G Cut
128 64 64 64 R Cut
50H3
60H3
255 192 192 192 00 jf Jc ji B Gain
255 192 192 192 00 je Jb jh G Gain
255 192 192 192 00 jd Ja jg R Gain
Warm Med Cool Warm Med Cool
MA X
CENTER
(DEFAULT)
Min
RS-232C COMMAND
[CMD ID DATA]