Read LG 42LC4D (CHASSIS:LA73E) Service Manual online
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5. Chroma & Brightness
5-1. 37LC7D-UB
CONDITION : EZ-Picture "Daylight"
5-2. 42LC7D-UB, 42LC4D-UA
CONDITION : EZ-Picture "Daylight"
No
Item
Min
Typ
Max
Unit
Remark
1.
White peak brightness
360
450
cd/m
2
HDMI input, full white,
Video Black level=High
2.
Contrast ratio
700:1
900:1
Non dimming mode
(PC Mode)
3000:1
4000:1
5000:1
Dimming mode
1. Input full black, wait 10 minute,
measure black level
2. Input full white , wait 10 minute,
measure white level
3.
Brightness uniformity
1.3
Refer to LCD SPEC.
4. Color
coordinate
RED
X
0.633
+/-
0.03
Y
0.339
+/- 0.03
GREEN
X
0.286
+/- 0.03
Y
0.610
+/- 0.03
BLUE
X
0.147
+/- 0.03
Y
0.065
+/- 0.03
WHITE
X
0.276
+/- 0.03
Y
0.283
+/- 0.03
5.
Viewing angle
178
R/L, U/D
6.
Color Temperature
Standard
8,300
9,300
10,300
<Test Signal>
Cool
10,000
11,000
12,000
HDMI input, With 16-gray pattern
Warm
5,500
6,500
7,500
6
th
bar from right
No
Item
Min
Typ
Max
Unit
Remark
1.
White peak brightness
360
450
cd/m
2
HDMI input, full white,
Video Black level=High
2.
Contrast ratio
800:1
1000:1
Non dimming mode
(PC Mode)
3000:1
4000:1
5000:1
Dimming mode
1. Input full black, wait 10 minute,
measure black level
2. Input full white , wait 10 minute,
measure white level
3.
Brightness uniformity
1.3
Refer to LCD SPEC.
4. Color
coordinate
RED
X
0.633
+/-
0.03
Y
0.339
+/- 0.03
GREEN
X
0.286
+/- 0.03
Y
0.610
+/- 0.03
BLUE
X
0.147
+/- 0.03
Y
0.065
+/- 0.03
WHITE
X
0.276
+/- 0.03
Y
0.283
+/- 0.03
5.
Viewing angle
178
R/L, U/D
6.
Color Temperature
Standard
8,300
9,300
10,300
<Test Signal>
Cool
10,000
11,000
12,000
HDMI input,
Warm
5,500
6,500
7,500
Daylight/Cool 85 IRE
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