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LG RD-JT40/41 Service Manual
44
(C) Optical Check
Equipment: Chroma 2250, CL-100
Aspect Ratio: 4:3
User OSD setting: (PC), 30 gray
Final Check
Step Screen Check Items Acceptance Criteria Equipment
ANSI Lumens >=450@PC mode 1.Brightness 100% W
Pattern
Uniformity >=70%
2.Contrast Ratio Checker Board ANSI C/R >=130:1
R Pattern Chromaticity Coordinate x, y
<=0.04
G Pattern Chromaticity Coordinate x, y
<=0.04
B Pattern Chromaticity Coordinate x, y
<=0.04
Chromaticity Coordinate x, y
<=0.04
100% W
Pattern
Uniformity
<=0.04
Chromaticity Coordinate x, y
<=0.04
3.Color
50% W Pattern
Uniformity
<=0.04
Dark Blemish <=6 Blue 180
Pattern
Dark pixel <=4
Bright Blemish <=6
4.DMD
Gray 30 Pattern
Bright pixel =0
Inspection
Step Check Items Acceptance Criteria Equipment
1.Apperance CHK Appearance C315
2.Buttom CHK Functionality Shinning and No Stuck
3.Front / Rear Foot CHK Functionality Adjustable
4.Zoom / Focus Ring CHK Functionality Adjustable
5.CFM Measure Air Flow >= TBD CFM
Jitter
Geometry
SMPTE133 Pattern
Focus/Ring
Stuck Bit
Color Ramp Pattern
Flashing
Tint
6.PC
Phone Lady picture
General Picture Quality
PC
Flicker Static pattern
(SMPTE133 Pattern)
Stuck Bit
Tint
Noise
7.Video
(RCA, S-Video)
Dynamic movie (Toy
Story/
Video Essential)
General Picture Quality
DVD Player
8.Audio Input / Output DVD Player
9.OSD/Remote
PC input
10.Hi-Pot
High Power Generator