LG 55LV355C-UA Service Manual page 12

5.1.3. Equipment connection
Probe
* If TV internal pattern is used, not needed
Connection Diagram of Automatic Adjustment
5.1.4. Adjustment Command (Protocol)
(1) RS-232C Command used during auto-adj.
RS-232C COMMAND Explanation
[CMD ID DATA]
Wb 00 00 Begin White Balance adj.
Wb 00 ff End White Balance adj. (internal pattern disappears )
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. complete
*(wb 00 20(start), wb 00 2f(end)) -> Off-set adj.
wb 00 ff ->End white balance auto adj.
(2) Adj. Map
Adj. item Command
(lower case ASCII)
CMD1
Cool R Gain j
G Gain j
B Gain j
R Cut
G Cut
B Cut
Medium j
R Gain
G Gain j
B Gain j
R Cut
G Cut
B Cut
Warm R Gain j
G Gain j
B Gain j
R Cut
G Cut
B Cut
5.1.5. Adjustment method
5.1.5.1 Auto WB calibration
1) Set TV in adj. mode using POWER ONLY (P-ONLY) key
2) Zero calibrate probe then place it on the center of the
Display
3) Connect Cable(RS-232C)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sing), check adj. status pre
mode (Cool, Medium, Warm)
6) Remove probe and RS-232C cable to complete adj.
• W/B Adj. must begin as start command "wb 00 00" , and
finish as end command "wb 00 ff", and Adj. offset if need
Copyright LG Electronics. Inc. All right 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
Data Range Default
(Hex.) (Decimal)
CMD2 MIN MAX
g 00 C0 172
h 00 C0 172
C0 192
i 00
64
64
64
a 00 C0 192
b 00 C0 192
c 00 C0 192
64
64
64
d 00 C0 192
e 00 C0 192
f 00 C0 172
64
64
64
5.1.5.2 Manual adj. method
1) Set TV in Adj. mode using POWER ON
2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface..
3) Press ADJ key -> EZ adjust using adj. R/C 6. White-
Balance then press the cursor to the right (KEYG). (When
KEY(G) is pressed 204 Gray(80IRE) internal pattern will be
displayed)
4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
• If internal pattern is not available, use RF input. In EZ Adj.
menu 6.White Balance, you can select one of 2 Test-pattern:
ON, OFF. Default is inner(ON). By selecting OFF, you can
adjust using RF signal in 204 Gray pattern.
• 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 10cm and perpendicular of the module surface (80°~
100°)
3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked using no
signal or Full-white pattern.
5.1.6 Reference (White Balance Adj. coordinate and color
temperature)
(1) Luminance: 204 Gray, 80IRE
(2) Standard color coordinate and temperature using CS-1000
Mode Color Coordination
x
COOL 0.269
MEDIUM 0.285
WARM 0.313
• Standard color coordinate and temperature using CA-
210(CH 9)
Mode Color Coordination
x
COOL 0.269±0.002
MEDIUM 0.285±0.002
WARM 0.313+0.002
5.2 HDCP (High-Bandwidth
Contents Protection) SETTING
- 12 -
Temp
y
0.273 13000K
0.293 9300K
0.329 6500K
Temp
y
0.273±0.002 13000K
0.293±0.002 9300K
0.329±0.002 6500K
Digital
LGE Internal Use Only
∆UV
0.0000
0.0000
0.0000
∆UV
0.0000
0.0000
0.0000