LG 50PM4700 Service Manual page 8

5.2.5.2 Auto adj. Sequence
- White Balance Adjust Sequence
Start -> Cool_Gain -> Medium_Gain -> Warm_Gain -> End
5.2.5.3 Manual adj. method
Dynamic contrast : off
Dynamic color : off
OPC : Off
Energy saving mode : Off
9. White Balance
● Test Equipment: CA-210
- Using PDP color temperature, Color Analyzer (CA-210)
must use CH 10, which Matrix compensated (White, Red,
Green, Blue compensation) with CS-2100. See the
Coordination bellowed one.
● Manual adjustment sequence is like bellowed one.
- Turn to "Ez-Adjust" mode with press ADJ button of service
remocon.
- Select "10.Test Pattern" with CH+/- button and press
enter. Then set will go on Heat-run mode. Over 30
minutes set let on Heat-run mode.
- Let CA-210 to zero calibration and must has gap more
10cm from center of PDP module when adjustment.
- Press "ADJ" button of service remocon and select
"7.White-Balance" in "Ez-Adjust" then press "►" button of
navigation key. (When press "►" button then set will go to
full white mode)
- Adjust at three mode (Cool, Medium, Warm)
- If "cool" mode
Let B-Gain to 192 and R, G, B-Cut to 64 and then control
R, G gain adjustment High Light adjustment.
- If "Medium" and "Warm" mode Let R-Gain to 192 and R,
G, B-Cut to 64 and then control G, B gain adjustment
High Light adjustment.
- All of the three mode
Let R-Gain to 192 and R, G, B-Cut to 64 and then control
G, B gain adjustment High Light adjustment.
- With volume button (+/-) you can adjust.
- After all adjustment finished, with Enter (■ key) turn to
Ez-Adjust mode. Then with ADJ button, exit from
adjustment mode
* Attachment: White Balance adjustment coordination and
color temperature.
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
● Using CS-1000 Equipment.
- COOL : T=11000K, ∆uv=0.000, x=0.276 y=0.283
- MEDIUM : T=9300K, ∆uv=0.000, x=0.285 y=0.293
- WARM : T=6500K, ∆uv=0.000, x=0.313 y=0.329
● When tester will measure on Cool condition, adjust W30 on
TV display menu.
● When tester will measure on medium condition, adjust 0 on
TV display menu.
● When tester will measure on warm condition, adjust W30 on
TV display menu.
● Using CA-210 Equipment. (10 CH)
- Contrast value: 216 Gray
Color Test
temperature Equipment
COOL CA-210
MEDIUM CA-210
WARM CA-210
- Brightness spec.
Item White average
brightness
Min 49
Typ 60
Max
Unit cd/m²
Remark - 100% Window White
Pattern
- 100IRE(255Gray)
- Picture: Vivid(Medium)
5.2.6 Reference
(White Balance adj. coordinate and color temperature)
■ Standard color coordinate and temperature using CS-1000
■ Luminance: Full white 216 Gray
Color Color Coordination
temperature
x
COOL 0.276
MEDIUM 0.285
WARM 0.313
- 8 -
Color Coordination
x y
0.276 ± 0.002 0.283 ± 0.002
0.285 ± 0.002 0.293 ± 0.002
0.313 ± 0.002 0.329 ± 0.002
Brightness uniformity
-20
+20
%
- 85IRE(216Gray) 100%
Window White Pattern
- Picture: Vivid(Medium)
Temp ∆uv
y
0.283 11000K 0.0000
0.293 9300K 0.0000
0.329 6500K 0.0000
LGE Internal Use Only