LG 55LE7500 Service Manual page 12

4.3.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using POWER ON 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 adjustment.
5) When adj. is complete (OK Sing), check adj. status pre
mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
W/B Adj. must begin as start command "wb 00 00" , and
A
finish as end command "wb 00 ff", and Adj. offset if need.
(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 -> 7. White-
Balance then press the cursor to the right (KEY
(When KEY( ) is pressed 216 Gray internal pattern will
G
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
A
Adj. menu 7.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 216
Gray pattern.
Adj. condition and cautionary items
A
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.
4.3.6. Reference (White Balance Adj. coordinate
and temperature)
Luminance : 216 Gray
A
Standard color coordinate and temperature using CS-1000
A
(over 26 inch)
Mode Color Coordination
x
COOL 0.269
MEDIUM 0.285
WARM 0.313
Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Temp
y
0.273 13000K
0.293 9300K
0.329 6500K
Standard color coordinate and temperature using CA-
A
210(CH 9)
Mode
COOL
MEDIUM
WARM
4.4. EYE-Q function check
Step 1) Turn on TV
Step 2) Press EYE key of Adj. R/C
Step 3) Cover the Eye Q II sensor on the front of the using
your hand and wait for 6 seconds
Step 4) Confirm that R/G/B value is lower than 10 of the "Raw
Data (Sensor data, Back light)". If after 6 seconds,
R/G/B value is not lower than 10, replace Eye Q II
).
G
sensor.
Step 5) Remove your hand from the Eye Q II sensor and wait
for 6 seconds.
Step 6) Confirm that "ok" pop up. If change is not seen,
replace Eye Q II sensor.
4.5. Local Dimming Function Check
Step 1) Turn on TV.
Step 2) Press Tilt key of Adj. R/C.
Step 3) Confirm under the screen.
∆UV
0.0000
0.0000
0.0000
- 12 -
Color Coordination
x y
0.269 ± 0.002 0.273 ± 0.002 13000K
0.285 ± 0.002 0.293 ± 0.002
0.313 ± 0.002 0.329 ± 0.002
Temp ∆UV
0.0000
9300K 0.0000
6500K 0.0000
LGE Internal Use Only