Check Of White Balance; Required Equipment; Function Check; Preset Ch Writes Condition - LG 22LN4000 Service Manual

(1) RGB EDID Data
1) All data are HEXA
2) Adjustable Data :
**: week
***: year ex) when year 2008: input "12"
****: CHECK SUM (deferent along week, year)

5. Check of White Balance

RGB_Gains are fixed data for each model.
Insert D-sub jack (I2C) 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.

5.1. Required Equipment

■ Remote controller for checking W/B
■ Color Analyzer : CA-210
■ CH: 14 (LCD MNT, Normal) → 22LN4000
■ PC (for communication through RGB)
■ Pattern Generator (MSPG-925FS series)
5.2. Connecting diagram of equipment for
measuring(For Automatic Adjustment)
(Method 1, using IIC, You connect RGB Cable)
(Standard color coordinate and temperature when using the
CA210 equipment)
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
RGB_Gains are fixed data for each model
Color Cool 13,000k
Temperature
Medium 9,300k
Warm 6,500k
Luminance Cool Min: 150
(cd/m 2 )
Medium Min: 150
Warm Min: 150
* When doing Adjustment, Please make circumstance as below.
* W/B condition
- Ambient Humidity
- Ambient Temperature : 25 ± 5 °C

6. Function Check

6.1. Check display and sound
■ Check input and Signal items. (cf. work instructions)
1. TV
2. AV (CVBS)
3. RGB (PC : 1366 x 768 @ 60hz)(Display only)
4. HDMI

7. Preset CH writes condition

(1) AC on time on only one after assembled automatically
(2) CH recover on SVC OSD manually
System Control 2
EDID Download
Channel Recover
UTT Reset
- 9 -
°K x = 0.269 (±0.03) <Test Signal>
y = 0.273 (±0.03) RF/AV
Inner pattern
°K x = 0.285 (±0.03)
(216gray, 85IRE)
y = 0.293 (±0.03)
°K X=0.313 (±0.03)
Y=0.329 (±0.03)
Typ : 200 <Test Signal>
(Full white,
Typ : 200
100IRE)
Typ : 200
: 20 % ~ 80 %
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LGE Internal Use Only