LG 37LH250H Service Manual page 16

6.1.5 Adj. method
6.1.5.1 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 adj.
5) When adj. is complete (OK Sign), check adj. status per
mode (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
• Adj. must begin w/ command "wb 00 00", and end w/"wb 00
ff"and adj. offset if needed.
6.1.5.2 Manual adj. method
Dynamic contrast : off
Dynamic color : off
OPC : Off
Energy saving mode : Off
1) Set TV Picture Mode to Standard and in Advanced Control,
set Dynamic Contrast and Color 'Off'.
2) Set TV in adj. mode using POWER On Key
3) Press ADJ key -> EZ adjust using adj. R/C
4) Using CH + / - KEY, select 10.TEST PATTERN then press
Enter to place in HEAT RUN mode and wait for 30 minutes.
5) Zero calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10 cm of the surface.
6) Press ADJ key -> 7. White-Balance then press the cursor
to the right (KEY )
(When is pressed Full White internal pattern will be
displayed)
7) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
8) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature
•If internal pattern is not available, use HDMI input. In EZ Adj.
menu 7.White Balance, you can select one of 3 options:
None, Inner, HDMI. Default is inner. By selecting HDMI, you
can adjust using HDMI signal.
• Adj. condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower than 10 lux. Try to
isolate adj. area into dark surrounding.
2) Probe location
- LCD: Color Analyzer (CA-210) probe should be within 10cm
and perpendicular of the module surface (80°~ 100°)
- In case of LCD, B/L on should be checked using no signal or
Full white Pattern
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
6.1.6 Reference (White Balance adj. coordinate and color
temperature)
6.1.6.1 Adjustment Preparation
• W/B Equipment condition
CA210: CH 9, Test signal: Inner pattern (85IRE)
• Above 5 minutes H/run in the inner pattern. ("power on" key
of adjust remote control)
• 15 Pin D-Sub Jack is connected to the AUTO W/B
EQUIPMENT.
• Adjust Process will start by execute I2C Command (Inner
pattern (0xF3, 0xFF)).
Cool 11,000
Color
Medium 9,300
Temperature
Warm
∆ Manual White Balance adjust process using Service Remo-
con. After enter Service Mode by pushing "ADJ" key, enter
"White Balance" by pushing "•" key at " 6. White Balance".
(CA-210, CH-9)
*Adjust "R/G/B - GAIN" by pushing "
*Adjust "R/G/B - GAIN" by pushing "
*Adjust "R/G/B - GAIN" by pushing "
- 16 -
X=0.276 ± 0.003
K
Y=0.283 ± 0.003
X=0.285 ± 0.003
K
Y=0.293 ± 0.003
X=0.313 ± 0.003
6,500 K
Y=0.329 ± 0.003
", "
", "
", "
LGE Internal Use Only
<Test Signal>
Inner pattern
(216gray, 85 IRE)
" key at "Cool"
" key at "Medium"
" key at "Warm"