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4.1.2. Adj. condition and cautionary items
(1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux.
Try to isolate adj. area into dark surrounding.
(2) Probe location: Color Analyzer(CA-210) probe should be
within 10 cm and perpendicular of the module surface
(80°~ 100°)
(3) Aging time
1) After Aging Start, Keep the Power ON status during 5
Minutes.
2) In case of LCD, Back-light on should be checked using
no signal or Full-white pattern.
4.2. Equipment
(1) Color Analyzer: CA-210(NCG: CH 9/ WCG: CH12/ LED:
CH14)
(2) Adj. Computer(During auto adj., RS-232C protocol is needed)
(3) Adjust Remte control
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
* Color Analyzer Matrix should be calibrated using CS-1000.
4.3. Equipment connection
Probe
* If TV internal pattern is used, not needed
4.4. Adjustment Command (Protocol)
(1) RS-232C Command used during auto-adj.
RS-232C COMMAND
CMD
DATA
ID
wb
00
00
Begin White Balance adjustment
End White Balance adjustment
wb
00
ff
(internal pattern disappears )
(2) Adjustment Map
Command
Adj. item
(lower caseASCII)
CMD1
R Gain
j
G Gain
j
B Gain
j
Cool
R Cut
G Cut
B Cut
R Gain
j
G Gain
j
B Gain
j
Medium
R Cut
G Cut
B Cut
R Gain
j
G Gain
j
B Gain
j
Warm
R Cut
G Cut
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Co lo r Analyzer
RS -232C
Co m p ut er
RS -232C
RS -232C
Pat t ern Generat o r
Signal Source
Explanation
Data Range
(Hex.)
(Decimal)
CMD2
MIN
MAX
g
00
C0
h
00
C0
i
00
C0
a
00
C0
b
00
C0
c
00
C0
d
00
C0
e
00
C0
f
00
C0
4.5. Adjustment method
4.5.1. Auto WB calibration
(1) Set TV in ADJ mode using P-Only key(or POWER ON key).
(2) Place optical probe on the center of the display.
- It need to check probe condition of zero calibration before
adjustment.
(3) Connect RS-232C Cable.
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message, check
adjustment status of pre-set mode.(Cool, Medium, Warm)
(6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command "wb 00 00" , and
finish as end command "wb 00 ff", and Adj. offset if need.
4.5.2. LED White balance table
- If Model is Polaris Model, G-gain fix is applied.
(1) Cool Mode
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Adjust the G gain more than 172 (If R gain or
G gain is more than 255, G gain can adjust less than
172) and change the others (R/B Gain).
3) Adjustment mode : mode - Cool
(2) Medium / Warm Mode
1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
2) Principle : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to 192 (default
data) and decrease the others.
3) Adjustment mode : Two modes - Medium / Warm
4.6. Reference(White Balance Adjustment
coordinate and color temperature)
(1) Luminance: 204 Gray, 80IRE
(2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
■ The spec of color temperature and coordinate.
Mode
Color Temp
Cool
13,000 K
(C50)
Medium
9,300 K
(0)
Default
Warm
6,500 K
(W50)
* 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.
- 9 -
Color coordinate
Remark
x = 0.276 (±0.03)
* Test signal
y = 0.279 (±0.03)
- Inner pattern for
x = 0.290 (±0.03)
W/B adjust
y = 0.298 (±0.03)
- External white
pattern
x = 0.318 (±0.03)
(85IRE, 204gray)
y = 0.334 (±0.03)
LGE Internal Use Only
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