LG 42LN6150 (CHASSIS:LC33B) Service Manual ▷ View online
LGE TV Division LG()
Establish : 12.7.6. 44
Reform : 12.10.15 114
Reform : 12.10.15 114
LG 전자
LC33B Product Specification
▣
Max Luminance measure specification
1) In non-impressed condition, measure peak brightness displayable as much as possible LCD module.
2) Measuring instrument: CA-210 or a sort of Color Analyzer.
3) Pattern Generator : VG-828 or a sort of digital pattern generator (displayable Full White & 1/25 White Window pattern)
4) Measure condition
4) Measure condition
● Test pattern: 100IRE(255Level) pattern of Full window
● SET condition : Contrast & Brightness Level 100%
● Environment condition : Dark room in the non outside light
● Video menu option condition
Picture
Mode
Back
light
Color
Temp.
Dynamic
Contrast
Dynamic
Colour
Motion
EyeCare
LED Local
Dimming
Standard
100
C50
Off
Off
Off
Off
▣
DCR (Dynamic Contrast Ratio) measure specification
1) Measure condition
● Test pattern : 100IRE(255Level) and 0IRE (0Level) pattern of Full window
● Test pattern : 100IRE(255Level) and 0IRE (0Level) pattern of Full window
● Video menu option condition (same all input)
: Picture mode Vivid Default
2) Measurement
● Impress 100IRE(255Level) of Full window pattern signal, and measure center brightness degree Lw of white.
● Impress 100IRE(255Level) of Full window pattern signal, and measure center brightness degree Lw of white.
● Impress 0IRE(0Level) of Full window pattern, and measure center brightness degree Lb of black.
● Calculate the following numerical formula.
- Dynamic Contrast Ratio = Lw / Lb
▣
Contrast / Brightness Tracking measure specification
LGE TV Division LG()
Establish : 12.7.6. 45
Reform : 12.10.15 114
Reform : 12.10.15 114
LG 전자
LC33B Product Specification
1) Measure condition
● Test pattern : 100IRE(255Level) pattern of Full window
● Test pattern : 100IRE(255Level) pattern of Full window
● Video menu option condition : Shipment MODE. (In-Stop)
2) Measurement
● Brightness tracking : Change brightness value in video menu.
● Brightness tracking : Change brightness value in video menu.
Check the luminance every 10 point while decrease brightness value 100 to 0.
● Contrast tracking : Change contrast value in video menu.
● Contrast tracking : Change contrast value in video menu.
Check the luminance every 10 point while decrease contrast value 100 to 0.
▣
Static Contrast Ratio for Local Dimming
1) Measure condition
● Test pattern : 50 APL Window Pattern [Left – 100IRE (255Level) of 50% window / Right – 0IRE(0Level) of 50% window]
● Test pattern : 50 APL Window Pattern [Left – 100IRE (255Level) of 50% window / Right – 0IRE(0Level) of 50% window]
● Video menu option condition
- Picture mode Vivid Default , HDMI
Measure Point
LGE TV Division LG()
Establish : 12.7.6. 46
Reform : 12.10.15 114
Reform : 12.10.15 114
LG 전자
LC33B Product Specification
2) Measurement
● Impress specific pattern signal,
● Impress specific pattern signal,
● Measure center brightness degree Lw of left white window, and measure center brightness degree Lb of right black.
● Calculate the following numerical formula.
- Static Contrast Ratio = Lw / Lb
▣
Contrast ratio measure specification
1) Test display signal : 100%(255Gray)Full White Window signal & all Black Raster signal(0Gray)
2) Dark room measure condition : : Using touch type Color analyzer CA-210 Dark room in the non outside light
3) Bright room measure condition : In bright room of 150Lx illumination in the panel surface, locate a source of light on the above 45˚of the panel surface.
4) Measure method
● In standard test condition, impress 100%(255Gray)Full White Window Pattern signal .
measure center peak brightness degree LV of white window
● Impress black Raster signal as contrast ratio measurement signal.
Measure black brightness degree Lb of central
Calculate the following numerical formula
Contrast ratio = LV / Lb
If it does not use Prior measurement, use generally simple test measurement.
Signal
Picture Mode Dynamic Contrast Dynamic Color
Clear White
Black Level
RF
NTSC-M
Vivid
High
High
High
Low
PAL
Vivid
High
High
High
Auto
AV
NTSC-J
Vivid
High
High
High
High
PAL
Vivid
High
High
High
Auto
Component
1080p
Vivid
High
High
High
High
RGB
1024x768
Vivid
Off deactivated
NA
LGE TV Division LG()
Establish : 12.7.6. 47
Reform : 12.10.15 114
Reform : 12.10.15 114
LG 전자
LC33B Product Specification
HDMI
DTV 1080p
Vivid
High
High
High
Low
▣
Luminance uniformity measure specification
1) Impress 100 % (255Gray Level) full white pattern at the same peak brightness measurement.
2) Measure brightness L0~L8 in each 9 points P0~P8
- Luminance uniformity(%) = Minimum(L1, L2, L3, …, L8) / Maximum(L1, L2, L3, …, L8) * 100
- Average Luminance = Sum of Luminance(L1, L2, L3, …, L8) / 9
3) Measure average brightness in IOP LED 17 points.
< EDGE LED>
1/9H
P8
P4
P7
P1
P0
P3
P5
P2
P6
1/9V
1/2H
H
1/2V
V
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