White Balance Adjustment - LG 29LN45 Service Manual

4.3. Function Check
4.3.1. Check display and sound
■ Check Input and Signal items. (cf. work instructions)
1) TV
2) AV (SCART/CVBS)
3) COMPONENT (480i)
4) RGB(PC : 1366 x 768 @ 60Hz)
5) HDMI(PC : 1366 x 768 @ 60Hz)
6) PC Audio In
* Display and Sound check is executed by Remote control
* Caution : Not to push the INSTOP KEY after completion if
the function inspection.
4.3.2. PCMCIA CARD Check
You must adjust DTV 29 Channel and insert PCMCIA CARD
to socket.
- If PCMCIA CARD works normally, video signals will appear
on screen. But it works abnormally, "No CA module" will
appear on screen.
* Caution: Set up "RF mode" before launching products.
4.3.3. PIP Check
(1) Press "Power on" key of service remote control.
(2) Input RGB & TV(ATV or DTV) signal.
(3) Set Input mode to RGB.
(4) Press 'PIP" key of ADJ remote control
(5) Check TV Video & Audio signal of Sub picture.
4.3.4 HDMI MHL Function Inspection(HDMI2 Port only)
(1) Insert HDMI cable for MHL function JIG connected to
HDMI2 port of the SET.
(2) Check that LED of JIG is green light and check that set
screen is correctly worked.
(3) If NG situation or other HDMI jack connection, LED of JIG
is red light and screen is not displayed.
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes

4.4. White balance adjustment

- Equipment
(1) Color Analyzer: CA-210 (LED Module : CH 14)
(2) Adj. Computer(During auto adj., RS-232C protocol is
needed)
(3) Adjust Remote control
RGB Gains are fixed data for each model.
Insert RS-232C Jack which is connected with PC for White
Balance or equivalent device.
→ Total Assembly line should be check whether the color
coordinate(x,y) data refer to below table were meet or not.
- Cool Panel
Cool 13,000
Color
Medium
Temperature
Warm
Cool Min : 80
Luminance
Medium Min : 80
(cd/m²)
Warm Min : 70
* Note : x,y coordinates are drifted about 0.007 after 30 mins
heat-run. So checking color coordinate within 5-min at
total assembly line, consider x,y coordinates might be
up to 0.007 than x,y target of each color temperature.
* Note : Manual W/B process using adjusts Remote control.
1) After enter Service Mode by pushing "ADJ" key,
2) Enter "White Balance" by pushing "►" key at "White
Balance".
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option6
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
12 EDID D/L
13. Sub B/C
14. Touch Sensitivity Setting
15. Ext. Input Adjust
16. SPK Lipsync Adjust
17.SPDIF Lipsync Adjust
* When doing Adjustment, Please make circumstance as
below.
- 13 -
X=0.276 (±0.03)
K
Y=0.275 (±0.03)
<Test Signal>
X=0.290 (±0.03)
9,300 K Inner pattern
Y=0.298 (±0.03)
(204gray,80IRE)
X=0.318 (±0.03)
6,500 K
Y=0.334 (±0.03)
K Typ : 110
<Test Signal>
K Typ : 110 Inner pattern
(204gray,80IRE)
K Typ : 110
Whit Balance
Color Temp. ◄
R-Gain
G-Gain
B-Gain
R-Cut
G-Cut
B-Cut
Test-Pattern
Backlight
Reset
LGE Internal Use Only
►
Cool
100
104
192
64
64
64
ON
100
To Set